VA student is experimenting with collisions and rolls ball A (mass m) at block B (mass m) with a velocity of VA. The coefficient of restitution is e and the kinetic coefficient of A B friction is Mk. Determine the time it takes for block B to come to rest after the collision. I Use Impulse-Momentum to Solve this Problem μk

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**Collision Experiment in Physics**

**Problem Statement:**

A student is experimenting with collisions and rolls ball A (mass \( m_A \)) at block B (mass \( m_B \)) with a velocity of \( v_A \). The coefficient of restitution is \( e \) and the kinetic coefficient of friction is \( \mu_k \).

**Question:**

Determine the time it takes for block B to come to rest after the collision.

**Illustration:**

The image shows a ball labeled 'A' moving towards a block labeled 'B' on a flat surface. The ball 'A' has an initial velocity \( v_A \) indicated by an arrow, and block 'B' is on a surface with a kinetic friction coefficient \( \mu_k \).

**Given Data:**

Use the following given data to solve the problem using the Impulse-Momentum method:

| Parameter | Symbol | Value | Units |
|-----------|--------|-------|-------|
| Mass of ball A | \( m_A \) | 2.3 | kg |
| Mass of block B | \( m_B \) | 3.8 | kg |
| Initial velocity of ball A | \( v_A \) | 4.7 | m/s |
| Coefficient of restitution | \( e \) | 0.75 | - |
| Kinetic coefficient of friction | \( \mu_k \) | 0.25 | - |

**Explanation:**

To solve this problem, we need to use the principles of impulse-momentum. This involves computing the velocity of block B immediately after the collision and then determining the time it takes for block B to come to a stop due to friction. 

Firstly, use the conservation of momentum and the coefficient of restitution to determine the velocity of block B just after the collision. Then, apply the principles of friction to find the deceleration of block B and use kinematics to determine the time it takes for block B to come to rest from its initial post-collision velocity.
Transcribed Image Text:**Collision Experiment in Physics** **Problem Statement:** A student is experimenting with collisions and rolls ball A (mass \( m_A \)) at block B (mass \( m_B \)) with a velocity of \( v_A \). The coefficient of restitution is \( e \) and the kinetic coefficient of friction is \( \mu_k \). **Question:** Determine the time it takes for block B to come to rest after the collision. **Illustration:** The image shows a ball labeled 'A' moving towards a block labeled 'B' on a flat surface. The ball 'A' has an initial velocity \( v_A \) indicated by an arrow, and block 'B' is on a surface with a kinetic friction coefficient \( \mu_k \). **Given Data:** Use the following given data to solve the problem using the Impulse-Momentum method: | Parameter | Symbol | Value | Units | |-----------|--------|-------|-------| | Mass of ball A | \( m_A \) | 2.3 | kg | | Mass of block B | \( m_B \) | 3.8 | kg | | Initial velocity of ball A | \( v_A \) | 4.7 | m/s | | Coefficient of restitution | \( e \) | 0.75 | - | | Kinetic coefficient of friction | \( \mu_k \) | 0.25 | - | **Explanation:** To solve this problem, we need to use the principles of impulse-momentum. This involves computing the velocity of block B immediately after the collision and then determining the time it takes for block B to come to a stop due to friction. Firstly, use the conservation of momentum and the coefficient of restitution to determine the velocity of block B just after the collision. Then, apply the principles of friction to find the deceleration of block B and use kinematics to determine the time it takes for block B to come to rest from its initial post-collision velocity.
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