1) While standing on a stationary skateboard, Sunita catches a heavy ball thrown to her by...

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Physics

1) While standing on a stationary skateboard, Sunita catches aheavy ball thrown to her by a friend in the direction that theskateboard is pointing. What is the result of her catching theball?
A. She begins rolling at the same speed the ball had before shecaught it.
B. She begins rolling at a greater speed than the ball hadbefore she caught it.
C. She begins rolling at a lower speed than the ball had beforeshe caught it.
D. She remains stationary after catching the ball.
2)A figure skater performing a spin starts with his arms spreadwide and then brings them in close to his body. What is theresult?
A. His angular velocity increases, since his moment of inertiadecreased.
B. His angular velocity increases, since his moment of inertiaincreased.
C. His angular velocity decreases, since his moment of inertiadecreased.
D. His angular velocity decreases, since his moment of inertiaincreased.

Answer & Explanation Solved by verified expert

4.0 Ratings (654 Votes)

1 Using conservation of momentumfor Sunita and ball systemPi initial momentum of the system mv where m is mass of the ball and v is its speedSunita is at rest initially See Answer

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