Ball Hitting Stationary Blocks

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In summary, the conversation discussed the collisions between objects A and C with ball B. Object A ended up at rest after the collision, while object C rebounded to the left. The question was asked whether the final velocity of A (vA) was greater than, equal to, or less than the final velocity of C (vC). The correct answer was that vC was greater than vA, as momentum is conserved during collisions and object C had a greater momentum. The equation used to calculate momentum is P=mv.
  • #1
rockerdude1210
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Homework Statement



Objects A and C are made of different materials, with different “springiness,” but they have the same mass and are initially at rest. When ball B collides with object A, the ball ends up at rest. When ball B is thrown with the same speed and collides with object C, the ball rebounds to the left. Compare the velocities of A and C after the collisions. Is vA greater than, equal to, or less than vC?

1. vA > vC

2. vA = vC

3. vA < vC

Homework Equations


[/B]
P=mv

The Attempt at a Solution


[/B]
I thought that since the ball stopped in the case of A, all of the energy would be transferred to A and that it would have the higher final velocity. However, the correct answer was tha vC was greater than vA and I wasn't sure why

 
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  • #2
The energy need not conserve during a collision, but the momentum conserves. Which of A and C get greater momentum during the collision?
 
  • #3
Ah I get it,

Thanks!
 

Related to Ball Hitting Stationary Blocks

1. How does the speed of the ball affect the impact on stationary blocks?

The speed of the ball has a direct impact on the force with which it hits the stationary blocks. The faster the ball is moving, the greater the force of the impact will be. This can lead to a more significant displacement or damage of the blocks.

2. What is the role of the angle of the ball in hitting stationary blocks?

The angle of the ball also plays a crucial role in how it hits the stationary blocks. If the ball is hit at a perpendicular angle, it will transfer more force onto the blocks, potentially causing more damage. On the other hand, if the ball is hit at an angle, it may simply bounce off the blocks without causing much impact.

3. Can the material of the blocks affect the outcome of the ball hitting them?

Yes, the material of the blocks can have a significant impact on the outcome of the ball hitting them. Softer materials, such as foam or plastic, will absorb more of the force from the ball, resulting in less displacement or damage. On the other hand, harder materials, like wood or metal, will transfer more force onto the ball, potentially causing more damage.

4. How does the mass of the ball influence its impact on stationary blocks?

The mass of the ball also plays a role in its impact on stationary blocks. A heavier ball will have more kinetic energy, meaning it will transfer more force onto the blocks upon impact. This can lead to a more significant displacement or damage of the blocks. However, a lighter ball may not have enough force to cause any noticeable impact on the blocks.

5. Is there a maximum force that a ball can exert on stationary blocks?

Yes, there is a maximum force that a ball can exert on stationary blocks. This is known as the terminal force and is determined by the mass, speed, and angle of the ball, as well as the material and structure of the blocks. Once the terminal force is reached, the ball will no longer cause any additional displacement or damage to the blocks.

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