Unit 9 Review: Momentum and Impulse

Which takes more force to catch, a bowling ball or a baseball?

• A baseball because it has more momentum

• A bowling ball because it has more momentum

• A baseball because it has less momentum

• A bowling ball because it has less momentum

A 60 kg runner is jogging at 5 m/s. What is his momentum?

• 12 kgm/s

• 55 kgm/s

• 65 kgm/s

• 300 kgm/s

The definition of momentum is the tendency for objects to

• change direction but keep going the same speed

• keep going in the same direction with the same speed

• keep going in the same direction but change speed

• stop moving in the same direction and change speed

What is the unit for momentum and impulse

• N

• kgm/s

• m/s

• J

A boy kicks a football with a force of 25 N, the time the force acts for is 0.3 s. What is the impulse the ball experienced?

• 7.5 kgm/s

• 83.3 kgm/s

• 25.3 kgm/s

• 24.7 kgm/s

A 150 kg truck accelerates from 15 m/s to 30 m/s in 5 seconds. What is the impulse that the truck experienced?

• 50 kgm/s

• 50 J

• 450 J

• 450 kgm/s

A 1.7 kg vase falls off a shelf over the course of 6 seconds. What impulse does the book experience?

• 99.96 kgm/s

• 10.2 kgm/s

• 2.78 kgm/s

• None of these

A positive value for impulse means that momentum was _____

• added

• taken away

• unchanged

Which will experience a greater force on impact?

• An egg hitting a brick wall

• An egg hitting a sheet

A 75 kg lion runs with an acceleration of 5 m/s^2 for a total of 7 seconds. What impulse does the lion experience?

• 53.6 kgm/s

• 2625 kgm/s

• 105 kgm/s

• 3012 kgm/s