Studied by 78 people

5.0(3)

Get a hint

Hint

1

**Momentum**

quantity of motion that an object has

“mass in motion”

describes an object's __resistance__ to stopping

New cards

2

mass and velocity

The amount of momentum that an object has is dependent upon two variable

New cards

3

directly proportional

momentum is ___________ to both mass and speed

New cards

4

**IMPULSE**

a certain amount of force you apply for a certain amount of time to cause a change in momentum.

New cards

5

p=mv

momentum formula

New cards

6

J=ft

impulse formula

New cards

7

**IMPULSE-MOMENTUM THEOREM**

states that the change in momentum of an object equals the impulse applied to it.

New cards

8

**LAW OF CONSERVATION OF MOMENTUM**

In the

__absence__of an external force, the momentum of a system__does not__change.

New cards

9

**LAW OF CONSERVATION OF MOMENTUM**

states when a system of interacting objects is not influenced by outside forces (like friction), the total momentum of the system can not change

the total momentum of all objects interacting with one another remains constant regardless of the nature of the forces between the objects

the total momentum of a system will stay the __same__ before and after a collision

New cards

10

m1v1= -m2v2

**LAW OF CONSERVATION OF MOMENTUM equation**

New cards

11

**RECOIL**

a term that refers to moment when a gun moves backwards after it is shot

New cards

12

__uniformly accelerated motion__

The motion of an object with __constant acceleration__ is also known as ___________

New cards

13

**COLLISIONS**

any event in which two or more bodies exert forces on each other in a relatively short time.

New cards

14

equals

In any collision, the total net momentum before the collision **___** the total net momentum after the collision

New cards

15

**ELASTIC**

When objects collide __without__ being permanently **deformed** and __without__ generating **heat**

New cards

16

**ELASTIC**

Perfectly ___ collisions almost never occur

Heat is usually generated with collisions, so energy is transformed out of the system

New cards

17

**ELASTIC**

Momentum AND Kinetic energy is conserved

No permanent deformation, no sound, no friction

Different direction

New cards

18

**INELASTIC**

When colliding objects

__stick__together and travel off as one object

Momentum is conserved, but Kinetic energy is **NOT**

New cards

19

**INELASTIC**

Possible permanent deformation, sound, or friction between objects

Work done by non-conservative forces

Same direction

New cards

20

**PROJECTILE**

neglects air resistant

New cards

21

**ONE-DIMENSIONAL MOTION**

motion along a straight line or in a single direction

New cards

22

**MOTION**

a __change__ in position with respect to a reference point.

New cards

23

**DISPLACEMENT**

the __straight-line__ distance between an object’s initial and final positions, with direction toward the final position

New cards

24

**DISTANCE**

the

__total__length of path taken by an object in moving from its initial to final position

New cards

25

**SPEED**

A __measure__ of how fast an object moves; Rate at which distance is covered; The distance traveled by a moving object per unit time

New cards

26

**VELOCITY**

includes the __speed__ of an object and the direction of its motion.

New cards

27

**ACCELERATION**

rate of __change of velocity__; Because velocity is a vector quantity, a change in velocity can be a change in magnitude, a change in direction, or a change in both magnitude and direction

New cards

28

**FREE FALL MOTION**

Objects that fall

**ONLY**due to__gravity__.the state wherein a falling object is

__free__from air resistance and falls under the influence of gravity**alone**Projectile’s downward acceleration when it is on air (-9.8 m/s^2)

Initial velocity is always 0 m/s

New cards

29

**PROJECTILE MOTION**

a motion in which an object is thrown near the earth’s surface, and it moves along the __curved path__ under the action of gravity only

New cards

30

**PROJECTILE MOTION**

Traces a curved (__parabolic__) line because at the same time that the ball is moving horizontally, it is also moving vertically under the effect of gravity.

New cards

31

**PROJECTILE MOTION**

Object that is initially thrown into the air and continues to move on its trajectory acted upon by gravity.

New cards

32

**HORIZONTAL**

one of the components of projectile motion

remains **constant**

entirely **independent**

New cards

33

**VERTICAL**

one of the components of projectile motion

velocity of a projectile changes

New cards

34

Time of Flight

__Time__taken by the projectile to cover the entire trajectory

New cards

35

Range

the

__horizontal__(x) distance traveled by the projectile during entire motion

New cards

36

Trajectory

The parabolic __path__ followed by a projectile in air

New cards

37

Type I

Horizontal, then vertical; there is an initial velocity

a rock is thrown horizontally from the top of a cliff 88 m high, with a horizontal speed of 25m/s.

New cards

38

Type II

Ground -> up -> down

a golf ball was struck from the first tee at Lunar Golf. It was given a velocity of 50m/s at an angle of 42o to the horizontal. On the moon, the acceleration due to gravity is 1.6m/s2

New cards

39

Type III

Initial velocity;

a diver takes off with a speed of 10 m/s from a 5 m high diving board at 30 above the horizontal.

New cards

40

45

best angle to fire to reach the largest distance

New cards

41

zero

Velocity in both highest and lowest points will always be __

New cards