Untitled Flashcards Set

1. What is number 2 called?

crest

trough

wavelength

amplitude

2. Where does the pendulum have the greatest kinetic energy?

3. A spring has a spring constant of 450 N/m. How far is the spring compressed if 150 N of force are used?

2.2 m

5.0 m

0.3 m

4. Calculate the displacement traveled in section D. Hint: Remember the area under a v-t graph = displacement!

250 m

50 m

100 m

200 m

150 m

5. What is the velocity of a ball that has been dropped off a cliff after 1 , 2, 3, 4, and 5 seconds? (assume g is rounded to 10 m/s2)?.

10, 20, 30, 40, 50 m/s5, 10, 15, 20, 25 m/s5, 20, 45, 80,125 m10,10,10,10,10 m/s

6. A student walks 3 blocks south, 4 blocks west, and 3 blocks north. What is the displacement of the student?

10 blocks E10 blocks W4 blocks E4 blocks W

7. A 0.25-kg cue ball traveling at 22 m/s hits the 0.25-kg 8-ball in a perfectly elastic collision. The cue ball stops after the collision, how fast does the 8-ball go after the collision?

22 m/s

66 m/s

88 m/s

100 m/s

8. What is the difference between calculating power and work?

Power takes into account the time it takes to complete a taskWork takes into account the time it takes to complete a taskPower is force/areaWork is force/area

9. An engine does 300 J of work in 10 seconds. How much power did it use?

3000 N

3000 W

30 W

30 J

10. If an object is in free fall for three seconds, how fast will it be falling at the end of its motion?

9.8 m/s

19.6 m/s

29.4 m/s

39.2 m/s

11. Which projectile has the greatest acceleration?

ABThe both have the same acceleration

12. Which wave in the diagram has the greatest wavelength?

1234

13. Find the work of a turtle that has a force of 27 newtons and travels a distance of 3 meters.

81 watts81 joules9 watts9 joules

14. An object falls from a high building. Ignoring air resistance, what will its velocity be after 6 seconds of falling?vf=gt

9.8 m/s

58.8 m/s

6 m/s

8 m/s

15. A pendulum oscillates as shown. At which of the following positions is the potential energy equal to the total energy?

Not enough information

16. What is the Net Force of the Diagram above?

150 N to the right50 N to the left1500 N to the right0 N

17. A steel ball is attached to a string and is swung in a circular path in a horizontal plane, as illustrated in the figureAt point P, the string suddenly breaks near the ball. If these events are observed from directly above as in the figure, which path would the ball most closely follow after the string breaks?

Point A

Point B

Point C

Point D

Point E

18. What is the net force acting on the object?

22 N20 N18 N10 N

19. An object has a weight of 200 N and is moved 3 meters. How much work is done?

66.7 J600 J203 J0.015 J

20. What is the Total Mechanical Energy at point A?

500,000 J

400,000 J

200,000 J

50,000 J

21. Which of the following electromagnetic waves has the lowest frequency?

gamma ray

infrared wave

visible light wave

microwave

22. A baseball with a mass of 0.80 Kg is given an acceleration of 20. m/s2. How much force was applied to the ball?

1.1 N0.04 N16 N25 N

23. The _______________ determines the color of visible light.

wavelength (and frequency)

speed

amplitude

particles of the medium

24. A 10 kg mass is lifted to a height of 2 m. What is the energy at this position?

196.2 J

98.1 J

40 J

20 J

25. A vehicle travels 2345 m in 315 s toward the evening sun. What is its speed?

7.44 m/s

0.13 m/s

738,675 m/s

7.44m

26. A test car moves at a constant speed around a circular track. If the car is 48.2 m from the track's center and has a centripetal acceleration of 8.05 m/s2, what is the car's tangential speed?

19.7 m/s5.99 m/s0.17 m/s388.01 m/s

27. If a person walked at 2 m/s for 12 s he/she would travel a distance of _______.

24 m

6 m

4 m

none of the answers

28. A wave with a frequency of 800 Hz is traveling at a speed of 900 m/s. What is the wavelength rounded to the nearest tenth?

v=λ×f

1.1 m

5 m

8 m

11 m

29. How much work is done by lifting an object with a weight of 250 N a total of 2 m off the ground?

125 J

125 W

500 W

500 J

30. When water falls through a dam and turns a turbine connected to a generator, electricity is produced. The electricity is used to light a home. Which shows the energy transformation?

electrical➡light➡mechanical

chemical➡mechanical➡electrical

mechanical➡chemical➡light

mechanical➡electrical➡light

31. Reorder the following according to the spectrum

red

orange

yellow

green

blue

32. Which graph do you think would represent oscillation?

33. What is the net force caused by the Earth acting on the Hubble Telescope when the Hubble Telescope is 1.93E8 m away? The Hubble Telescope has a mass of 11,110 Kg and Earth has a mass of 5.97E24 Kg.

118.73 N2.24E10 N1.78E12 N2.67E22 N

34. How would the mass and weight of an object on the Moon compare to the mass and weight of the same object on Earth?

Mass and weight would both be less on the Moon

Mass would be the same but its weight would be less on the Moon

Mass would be less on the Moon and its weight would be the same

Mass and weight would both be the same on the Moon

35. A 10 kg car is moving at 2 m/s. What is the energy of the car?

20 J

40 J

10 J

30 J

36. What values are always known for a free falling object?

v0 = 0 m/s
a = -9.8 m/s2

v0 = -9.8 m/s
a = -9.8 m/s2

v0 = -9.8 m/s
a = 0 m/s2

d= = -9.8 m
v0 = 0 m/s

37. What is the graph showing?

Constant high speed

Stopped

Accelerating

Constant low speed

38. A 4.0-kg medicine ball is thrown at 15 m/s and hits a 55-kg boy standing still on his skateboard. If the medicine ball continues with a speed of 4.0 m/s, how fast will the boy and skateboard be going after the collision?

.80 m/s

1.5 m/s

.30 m/s

0.50 m/s

3.0 m/s

39. What is this graph showing?

Gradually slowing down

Gradually speeding up

Constant speed

Stopped

40. Which two points have the same potential energy?

U & V

S & T

T & X

S & X

41. If a train is traveling at 15 m/s east and the conductor sees a car stranded in the middle of the tracks ahead of it, will the train be able to stop in time? This situation is referring to what Newton's Law of Motion?

Newton's 1st LawNewton's 2nd LawNewton's 3rd LawNone of the above

42. A 1250 kg truck at rest takes 8.75 seconds to speed up to 45.3 m/s. What is the force produced by the engine?

6470 N

7500 N

7896 N

5895 N

43. A roller coasters accelerates from an initial velocity of of 6.0 m/s to a final velocity of 70 m/s over 4 seconds. What's the acceleration?

24 m/s218 m/s216 m/s216 m/s

44. What is number 3 called?

crest

trough

wavelength

amplitude

45. A car starts from rest at a stop light and reaches 20 m/s in 3.5 s. Determine the acceleration of the car.

2.2m/s27.0m/s25.7m/s270m/s2

46. What is the force of friction between a block of ice that weighs 950 N and the ground if μ = .12?

65 N226 N175 N114 N

47. When does the mass move at maximum velocity in a mass-spring system?

At equilibrium

At the farthest point from the equilibrium

At its hightest point

At its lowest point

48. A 6.00 kg bullet is fired horizontally at 245.0 m/s into a 1.50 kg wooden block resting on a horizontal surface. What is the speed of the bullet and wood when the bullet is stuck in the wood?

196 m/s

150 m/s

250 m/s

300 m/s

7.5 m/s

49. What is the graph showing?

Constant speed away from start

Constant speed toward start

Accelerating away from start

Stopped toward start

50. Which ball will hit the ground first?

ABThey will both hit the ground at the same time.

51. Two spherical objects have masses of 8000 kg and 1500 kg. Their centers are separated by a distance of 1.5 m. Find the gravitational attraction between them

5.4 X 10-4 N

1.2 X 107 N

3.6 X 10-4 N

5.33 N

52. MORE THAN 1 is correct.Which of these would be considered oscillators?

53. Find the time it takes a person to walk up the stairs if they move with an average velocity of 0.76 m/s over a displacement of 6 m.

0.12 s

4.56 s

7.89 s

21.33 s

54. If a car weighs 3000 N and drives a distance of 10 m in 2 seconds, how much power does it use?

1,500 J

60,000 W

15,000 W

6,000 J

55. Which wave would have the highest frequency

microwaves

x-rays

blue light

Infra red

56. What is one way in which an impact force can be reduced?

Increasing the change in velocity.

Increase the mass.

Decrease the impact time.

Increase the impact time.

57. What type of wave requires a medium?

Electromagnetic

Gamma

Mechanical

Radio

58. What is the period of the Earths rotation?

24 hrs

48 days

24 days

48 hrs

59. The graph below shows the distance and object traveled over time. Which line segment represents the time time interval during which the object was moving at a positive constant speed?

segment Wsegment Xsegment Ysegment Z

60. When is the pendulum at maximum velocity

At its lowest point

At its highest point

It moves at a constant velocity

It is at rest

61. Two factors effecting the magnitude of the force of gravity between 2 objects are...

mass and distance

mass and matter

distance and weight

weight and mass

62. Calculate the momentum of a 2400 kg car moving 46 m/s

0.02 kgm/s500,528 kgm/s52 kgm/s110,400 kgm/s

63. Why we get more tired running up the stairs than we do walking up the stairs?

We do more work

We use more power

Because we use more force

Because we travel a longer distance

64. If two objects, each with a mass of 400 Kg, produce a gravitational force between them of 3.7E‐8 N. What is the distance between them?

7.79E9 m288.43 m16.98 m88,260.98 m

65. Which has a higher frequency?

visible light

ultraviolet rays

66. Which wave has a more amplitude?

67. What's the centripetal acceleration of an object traveling 2.3 m/s around a circle of diameter 0.6 m?

5 m/s2

17.63 m/s2

10 m/s2

8.81 m/s2

68. Find the velocity of a plane that traveled 3000 miles west in 5 hours.

65 mph west6 mph west600 mph west6000 mph west

69. Calculate the impulse experienced by a 70 kg halfback encountering a force of 1025 N for 0.350 seconds.

359 Ns5.13 Ns24.5 Ns

70. A 1.0 kg ball is stationary at the top of a hill that is 10.0 meters in height. The ball rolls all the way down the hill. What is its gravitational potential energy at the bottom of the hill?

0 joules

98 joules

49 joules

38 joules

71. A car is traveling at a speed at 45 km/h to a town 90 km away. How long will the car take to get to the town?

0.5 h1 h1.5 h2 h

72. When does the mass move at 0 velocity in a mass-spring system?

At equilibrium

At the farthest point from the equilibrium

At its hightest point

At its lowest point

73. What impulse is exerted by a 10,000 N rocket that launches across 1.2 seconds?

8,300 Ns

12,000 Ns

1,019 Ns

None of these.

74. What is the velocity of a wave if it has a period of 3.4 s and a wavelength of 2 m?(round to the nearest hundredths place)

f= 1T

v=λ×f

0.59 m/s

0.75 m/s

1.2 m/s

2.1 m/s

75. Where does a pendulum have maximum potential energy?

at the bottom of its arc

at the end of its swing

as it rises up

as it falls

76. What provides the restoring force for a simple pendulum?

Gravity

Centripetal

Friction

77. Calculate the mass of a 6.5 m/s jogger with a momentum of 273 kgm/s

0.02 kg42 kg1774 kg5000kg

78. A Stanley cup is thrown horizontally. Which factor will increase the flight time of the cup?

increasing the vertical height from which the cup is thrown

increasing the horizontal velocity of the cup

decreasing the horizontal velocity of the cup

decreasing the vertical height from which the cup is thrown

79. Total energy = 350J

Useful energy = 70J

Workout the efficiency of this iphoneX.

efficiency = useful energytotal energy in ×100%

efficiency =

total energy in

useful energy

×100%

100%

80%

40%

20%

80. Which has more energy?

radio/tv waves

infrared

81. What kind of wave is this?

Transverse

Longitudinal

82. Which ball has the greatest vertical displacement?

ABThey both have the same vertical displacement.

83. Lisa pushes her big brother on the swing at the playground. After he gets off the swing, her little brother gets on. Lisa finds that it easier to push her little brother than it was to push her big brother. What is the most likely reason for this?

A smaller mass always moves faster than a larger mass

A smaller mass always moves slower than a larger mass

Less force is needed to move a larger mass the same distance

More force is needed to move a larger mass the same distance

84. Calculate the acceleration of the object

2.2 m/s²2.0 m/s²1.8 m/s²1.0 m/s²

85. At what degree should a water hose be pointed in order for the water to land with thegreatest horizontal range?

30o

60o

45o

86. In each of the following cases, determine where the car has no acceleration?

A car speeds up after a stoplight turns green.

A car slows down as it approaches a red light

A car with the cruise control set at 80 km/h going down a straight highway

A car turning a curve at a constant speed

87. Calculate the momentum of a 65 kg man at rest.

0 kgm/s64 kgm/s2 kgm/s85 kgm/s

88. A man drops his camera off of the top of the oil derrick tower at Six Flags. It falls for 5 second. Which of the following kinematic equations would he use in order to calculate the speed the camera was travelling when it hit the ground?

v=v0 + at

v=v

+ at

Δx=vot + 12 at2

Δx=v

t +

v2 = v02 + 2aΔx

= v

+ 2aΔx

Δx= 12 (v0 + v) ⋅t

Δx=

+ v) ⋅t

89. You are pushing a car as hard as you can for 5 minutes, but cannot get it to move. How much work have you done on the car?

There is not enough information to calculate the work.If you used 20 newtons of force, you will have done 100 Joules of workNone. There was no movement.None of the answers are correct.

90. A weightlifter presses a 400N weight 0.6m over his head in 2s. What is the power of the weightlifter?

120W

1200W

200W

240W

91. Which wave carries more energy?

Wave A

Wave B

92. Which of the following is an example of an inelastic collision?

a student runs across the grocery store and jumps onto the back of a shopping cart

a baseball is thrown at a car and bounces off of it

a ball is launched from a spring launcher

93. If Michael Jordan has a vertical leap of 1.29 m, then what is his takeoff speed if his acceleration is -9.8 m/s2 and his velocity at the top of his leap is 0 m/s?

v=v0 + at

v=v

+ at

Δx=vot + 12 at2

Δx=v

t +

v2 = v02 + 2aΔx

= v

+ 2aΔx

Δx= 12 (v0 + v) ⋅t

Δx=

+ v) ⋅t

94. A wave with a frequency of 800 Hz is traveling at a speed of 900 m/s. What is the wavelength rounded to the nearest tenth?

v=λ×f

Response

1.1

Uploaded images

95. A textbook is dropped from a second floor window and falls to the ground. What happens to the acceleration as the book falls to the ground

the acceleration increases

the acceleration decreases

the acceleration remains constant

96. A boy of mass 51kg climbed up a staircase of height 4m in 5s. Calculate the power delivered by the boy

255W

204W

2001.24W

400.25W

97. Which of the following is NOT an example of work being done?

Lifting a weight above your head

Carrying a box up the stairs

Pushing furniture across the room

Pushing downward on an unmoving table

98. If the floor is pushing you up, what force is this called?

Normal ForceApplied ForceFrictional ForceAir Resistance ForceTensional Force

99. What percent energy is wasted by a machine if the energy input is 262 J and the energy output is 131 J?

50%

100 J

100. A car is traveling to the right with a speed of 29m/s when the rider slams on the accelerator to pass another car. The car passes in 110 m with constant acceleration and reaches a speed of 34m/s. We want to find the acceleration of the car as it sped up. What equation should you choose?

v=v0 + at

v=v

+ at

Δx=vot + 12 at2

Δx=v

t +

v2 = v02 + 2aΔx

= v

+ 2aΔx

Δx= 12 (v0 + v) ⋅t

Δx=

+ v) ⋅t

101. A pumpkin is dropped from a 35 m building. What is its initial velocity ?

9.8 m/s235 m0 m/s9.8 m/s

102. A wave has a wavelength of 155 meters and is moving at a speed of 230 m/s. What is its frequency? (round to the nearest hundredths place)

v=λ×f

2.15 Hz

3.18 Hz

1.48 Hz

0.523 Hz

103. What is the graph showing?

Slows down toward start

Speeds up toward start

Slows down away from start

Speeds up away from start

104. A light bulb consumes 100 Watts. If it is left on for 20 seconds, how much work does it do?

5 J

2,000 J

0.2 J

100 J

105. If you do a push down on the floor to pick yourself up to do a pushup and go back down to the floor for a second push up, and so on, what Newton's Law is this referring to?

Newton's 1st LawNewton's 2nd LawNewton's 3rd LawNone of the above

106. A force of 1,500 N is applied to a 1,000 Kg car. What is the acceleration of the car?

0.67 m/s21.5 m/s21.5 N0.67 N

107. If this wave was traveling at a speed of 3m/s what would be the frequency of the wave?

3 Hz

1.5 Hz

1.33 Hz

0.75Hz

108. Two rocks with different size and mass are dropped from the same height. Which of the rock will reach the ground first?

greater rock

smaller rock

both reach the ground at the same time

109. Which projectile will have the greatest height?

ABThe will both have the same height.

110. What is the wavelength of the wave shown in the picture?

Response

Uploaded images

Question 5

1.5s

What is the velocity of a ball that has been dropped off a cliff after 1 , 2, 3, 4, and 5 seconds? (assume g is rounded to 10 m/s2)?.

10, 20, 30, 40, 50 m/s5, 10, 15, 20, 25 m/s5, 20, 45, 80,125 m10,10,10,10,10 m/s

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