Impulse and Momentum

What is the momentum of a 70 kg runner traveling at 10 m/s?

• 7 kg*m/s

• 700 kg*m/s

• 1.4 kg* m/s

• 0.7 kg *m/s

What is the momentum of a 800 kg car traveling at 20 m/s?

• 16,000 kg*m/s

• 16 kg*m/s

• 1.6 kg*m/s

• 0.025 kg*m/s

What is the mass of a tennis ball traveling at 40 m/s with a momentum of 1.88 kg*m/s?

• 38.1 kg

• 21.3 kg

• 0.047 kg

• 5 kg

How are impulse and the change in momentum of an object related?

• they are the same

• they are opposites

• they don't relate to each other

• they go against each other

What is the change in momentum of a 950 kg car that travels from 40 m/s to 31 m/s?

• - 9 N*s

• -38000 N*s

• - 8550 N*s

• - 29450 N*s

What is the change in momentum of a 40 kg runner that goes from 5 m/s to 11 m/s?

• +240 N*s

• +6 N*s

• + 9 N*s

• +665 N*s

A mud blob, 0.350 kg, is thrown at a wall at 10 m/s. Once it hits the wall, it comes to a stop. What is the impulse it experiences?

• - 28.6 N*s

• - 10 N*s

• - 9 N*s

• - 3.5 N*s

Calculate the impulse experienced by a 65.8-kg halfback encountering a force of 1025 N for 0.350 seconds.

• 67445 N*s

• 23 N*s

• 2928.5 N*s

• 359 N*s

The engine of a machine produces a force of 1,000 N for a period of 20.0 seconds. What is the magnitude of the impulse from the engine?

• 50 N*s

• 0.02 N*s

• 20,000 N*s

• 980 N*s

A softball pitcher throws a fast ball with a 100 N*s impulse. If the player applied a 660 N force to the ball, for how much time was the player in contact with the ball?

• 0.15 s

• 6.6 s

• 66,000 s

• 88 s