Impulse-Momentum Quiz

Which of the following has the greatest momentum?

• A .003 kg snail falling off a leaf at 10 m/s

• A 1500 kg car moving at 0 m/s

• A 5 kg baby crawling at the speed 0.71 m/s

• a 0.006 kg pencil rolling off a table at 5 m/s

What velocity must a 900 kg car have in order to have the same momentum as 2000kg bus traveling at 20 m/s?

• 44.4 m/s

• 38.5 m/s

• 15.2 m/s

• 20.0 m/s

A man that weighs 40 kg is outside of his spaceship floating in place. In horror he realizes he is not tethered to the spaceship and can not get back to it. Luckily he is holding a 1 kg wrench, and decides to throw it at the speed 5 m/s in the opposite direction of the spaceship. What is his velocity after he throws the wrench.

• • -5 m/s

• • -.125 m/s

• -1 m/s

• -.4 m/s

To break an egg it must receive 25 N of force, what is the minimum time interval needed to stop the egg if the egg weighs 0.08 kg and is moving at 5 m/s as it hits the ground?

• 1.0 s

• 0.016

• 0.05 s

• 0.15 s

What is the impulse that a 5kg cat feels after it falls from the height of 36 meters to rest?

• 175 N*s

• 133 N*s

• 122 N*s

• 146 N*s

Two 55 kg divers jump off a high dive 15m high. One lands into water and eventually reaches rest, and the other misses and hits the concrete. Which would have a greater change in momentum?

• The diver that hit the concrete

• The diver that hit the water

• Its the same change in momentum

What type of collision is this scenario: A bowling ball hits a pin.

• perfectly inelastic

• Kinetic

• explosion

• Elastic

An Impulse (change in momentum) is equal to

• The product of mass and velocity

• The product of the mass of the object and the time interval

• The product of force applied to the object and the time interval

• The force divided by the time interval

A 3000 kg bus is traveling through San Francisco at 25.0 m/s. The brake on the bus fails and crashes into a taxi and loses 20,000 kg*m/s of momentum. How fast is the bus going after the collision?

• 17.00 m/s

• 20.15 m/s

• 18.33 m/s

• 19.45 m/s

A 3000 kg bus is traveling through Temecula at 25.0 m/s. The brakes on the bus fail and crashes into a 1268 kg Honda Civic at rest and sticks to it. What is the final speed of the two stuck together cars after the collision?

• 18 m/s

• 20 m/s

• 22 m/s

• 17 m/s