Momentum and Impulse Test Review
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Last updated 3:13 PM on 12/10/22
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18 Terms
1
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In a laboratory test, a car of mass 1200kg is driven into a concrete wall. A video recording of the test shows that the car is brought to rest in 0.36s when it collides with the wall. The speed of the car before the collision is 7.5m/s. What is the momentum of the car?
9000kg m/s
2
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What is the impulse of the car in question 1?
(Q1: In a laboratory test, a car of mass 1200kg is driven into a concrete wall. A video recording of the test shows that the car is brought to rest in 0.36s when it collides with the wall. The speed of the car before the collision is 7.5m/s. What is the momentum of the car?)
(Q1: In a laboratory test, a car of mass 1200kg is driven into a concrete wall. A video recording of the test shows that the car is brought to rest in 0.36s when it collides with the wall. The speed of the car before the collision is 7.5m/s. What is the momentum of the car?)
25,000N
3
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If the car in question 1 was brought to a stop in 0.16s instead of 0.36s, what is the impulse of the car?
(Q1: In a laboratory test, a car of mass 1200kg is driven into a concrete wall. A video recording of the test shows that the car is brought to rest in 0.36s when it collides with the wall. The speed of the car before the collision is 7.5m/s. What is the momentum of the car?)
(Q1: In a laboratory test, a car of mass 1200kg is driven into a concrete wall. A video recording of the test shows that the car is brought to rest in 0.36s when it collides with the wall. The speed of the car before the collision is 7.5m/s. What is the momentum of the car?)
56,250N
4
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A boy with a mass of 65kg lost his balance after doing hurdles. He collided with a bystander deceleration from 7m/s to a stop. What was his momentum?
455kg m/s
5
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What is the force of impulse experienced by the boy in question 4 during his collision?
(Q4: A boy with a mass of 65kg lost his balance after doing hurdles. He collided with a bystander deceleration from 7m/s to a stop. What was his momentum?)
(Q4: A boy with a mass of 65kg lost his balance after doing hurdles. He collided with a bystander deceleration from 7m/s to a stop. What was his momentum?)
455 kg m/s (as its missing a variable)
6
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If the boy in question 4 collided into a wall instead & felt a force of 64,000N, how much time did the collision take place?
(Q4: A boy with a mass of 65kg lost his balance after doing hurdles. He collided with a bystander deceleration from 7m/s to a stop. What was his momentum?)
(Q4: A boy with a mass of 65kg lost his balance after doing hurdles. He collided with a bystander deceleration from 7m/s to a stop. What was his momentum?)
0.007s
7
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What is the momentum of a 2000kg car traveling at 25m/s?
50,000kg m/s
8
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What is the mass of a car going at 22m/s & has a momentum of 30,000Ns?
1363.64
9
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What is the velocity of a 1500kg car that has a momentum of 37,500Ns?
25
10
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A 35N force from a baseball bat acts for 0.15s on a 0.245kg ball. What is the velocity of the ball on impact?
about 21.42 m/s
11
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A 36g bullet is going 650m/s. How much momentum does it have?
23400g m/s
12
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(True or False) ALL objects have mass.
True
13
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(True or False) ALL objects have an evenly distributed weight.
False
14
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In your own words, how can we find the center of mass?
It is the closest to the center we can get to balance an object evenly.
15
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The further you are away from the ______, the ____ _____ you need for rotation.
center, less, force
16
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What is another name for the Pivot Point when talking about torque (Starts with an F)?
Fulcrum
17
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What is the translation for Centripetal?
a center-seeking force / a force that seeks the center
18
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Give me 3 examples of how torque is seen in everyday life:
opening windows, pushing heavy items around, carrying objects