Part A Two students stand at rest, facing each other on frictionless skates. The

Question

Part A Two students stand at rest, facing each other on frictionless skates. They then start tossing a heavy ball back and forth between them. Describe their subsequent motion. Drag the terms on the left to the appropriate blanks on the right to complete the sentences. Reset Help are too far from each other Suppose the students always throw the ball with the same horizontal component of velocity. Each time a student throws the ball to his friend, he gains momentum in the clash with each other direction. Also, each time a student catches the ball, he gains momentum in the direction opposite to the ball motion also his friend. direction of the ball So the students will throw a ball until they motion to same away from opposite

Explanation / Answer

When a student holds the ball (not throwing), the momentum is 0. When the ball is thrown, ball's momentum is in the direction of its motion. So, to keep the final momentum of the student-ball 0, the student must have momentum in the opposite direction.

So,

1) opposite.

On catching the ball, momentum is gan=ined in the same direction and so he moves away from his friend. So,

2) Direction of the ball motion.

3) away from

So they keep moving away from each other until they are too far. So:

4) are too far from each other.

Related Questions

Navigate

• Browse (All)
• Browse P
• Subjects

---