Practice Problems

1 . 

A 5 kg bowling ball is rolled with a velocity of 10 m/s. What is its momentum?

1. 0.5kg⋅m/s0.5kg⋅m/s
2. 2kg⋅m/s2kg⋅m/s
3. 15kg⋅m/s15kg⋅m/s
4. 50kg⋅m/s50kg⋅m/s

2 .

(credit: modification of work from Pinterest)

A 155-g baseball is incoming at a velocity of 25 m/s. The batter hits the ball as shown in the image. The outgoing baseball has a velocity of 20 m/s at the angle shown.

What is the magnitudde of the impulse acting on the ball during the hit?

1. 2.68 kg⋅m/s.
2. 5.42 kg⋅m/s.
3. 6.05 kg⋅m/s.
4. 8.11 kg⋅m/s.