AP Physics: Momentum Change Calculated for Dropped Ball

In summary, momentum change is a measure of an object's motion and is calculated by multiplying its mass and velocity. It is important in AP Physics as it helps us understand the behavior of objects in different situations. Momentum change can be negative if an object's momentum decreases, and air resistance can affect the momentum change by slowing down the object's velocity.
  • #1
Silverbolt
24
0


A 3.0-kg ball, which is dropped, strikes the ground with a velocity of 16.0 m/s and rebounds with a velocity of -12.0 m/s. What is the change in momentum?
 
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  • #2


Remember the formula for momentum?
 
  • #3


p=mv ?
 
  • #4


Yes. Now how does that apply to the problem? If p = mv, what is change in p?
 
  • #5


mv final-mv inital
 
  • #6


Yep. Now is momentum a vector quantity? Does the sign matter?
 

1. What is momentum change?

Momentum change is a measure of the movement or motion of an object. It is defined as the product of an object's mass and velocity.

2. How is momentum change calculated for a dropped ball?

The momentum change for a dropped ball can be calculated using the formula p = m x v, where p is the momentum change, m is the mass of the ball, and v is the velocity of the ball.

3. Why is momentum change important in AP Physics?

Momentum change is important in AP Physics because it helps us understand the motion and interactions of objects. It allows us to predict and analyze the behavior of objects in various situations.

4. Can momentum change be negative?

Yes, momentum change can be negative. This occurs when an object's momentum decreases, which can happen if the object slows down or changes direction.

5. How does air resistance affect the momentum change of a dropped ball?

Air resistance can affect the momentum change of a dropped ball by slowing down the ball's velocity. This means that the momentum change will be less than it would be in a vacuum, where there is no air resistance present.

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