During a collision, does an object always encounters an impulse and a change in momentum?
Charlotte AaronYes. There is no way that a collision can produce zero impulse. (no change in momentum)
This is because of how momentum and impulse are defined:
For colliding objects to continue in the same direction at the same speed, they would need to pass through each other... which just isn't possible.
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Julia AguilarYes, during a collision, an object always encounters an impulse, which results in a change in momentum.
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When evaluating a one-sided limit, you need to be careful when a quantity is approaching zero since its sign is different depending on which way it is approaching zero from. Let us look at some examples.
When evaluating a one-sided limit, you need to be careful when a quantity is approaching zero since its sign is different depending on which way it is approaching zero from. Let us look at some examples.
When evaluating a one-sided limit, you need to be careful when a quantity is approaching zero since its sign is different depending on which way it is approaching zero from. Let us look at some examples.
When evaluating a one-sided limit, you need to be careful when a quantity is approaching zero since its sign is different depending on which way it is approaching zero from. Let us look at some examples.
- A ball with a mass of # 3 kg# is rolling at #5 m/s# and elastically collides with a resting ball with a mass of #9 kg#. What are the post-collision velocities of the balls?
- A ball with a mass of #12 kg# moving at #7 m/s# hits a still ball with a mass of #17 kg#. If the first ball stops moving, how fast is the second ball moving? How much kinetic energy was lost as heat in the collision?
- If the velocity of an object doubles, does its momentum double?
- A ball with a mass of # 5 kg# is rolling at #12 m/s# and elastically collides with a resting ball with a mass of # 9 kg#. What are the post-collision velocities of the balls?
- A ball with a mass of #1 kg # and velocity of #3 m/s# collides with a second ball with a mass of #3 kg# and velocity of #- 4 m/s#. If #75%# of the kinetic energy is lost, what are the final velocities of the balls?
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