Impulse and force and momentum

If a 20 N force is applied to a 4 kg box for 5 seconds, what is the change of momentum of the box?

• 100 kgm/s

• 25 kgm/s

• 400 kgm/s

• 80 kgm/s

What is the force applied to a 2 kg box that was going 10 m/s to bring it to a stop in 4 seconds?

• 80 N

• 5 N

• 20 N

• 15 N

If a .5 kg bug hits a moving car at 25 m/s, which had a bigger impulse?

• The Car

• The Bug

• They have the same impulse

• The bug accelerates more

What is the change in momentum if a 30 N force is applied to a 20 kg box for 2 seconds?

• 60 kgm/s

• 300 kgm/s

• 30 kgm/s

• 600 kgm/s

Which has a greater change in momentum, an egg falling on a hard floor and breaking, or the same egg falling on a carpeted floor and not break?

• the egg that broke

• the egg that didn't break

• the both had the same change in momentum

If a 20 kg cart was going 10 m/s, and it sped up to 25 m/s in 2 seconds, what is the impulse?

• 300 kgm/s

• 150 kgm/s

• 600 kgm/s

• 450 kgm/s

If a 20 kg cart was going 10 m/s, and it sped up to 25 m/s in 2 seconds, what is the Change in momentum?

• 300 kgm/s

• 150 kgm/s

• 450 kgm/s

• 600 kgm/s

If a 20 kg cart was going 10 m/s, and it sped up to 25 m/s in 2 seconds, what is the force applied?

• 150 N

• 450 N

• 300 N

• 600 N

If you apply 40 N to a 20 kg cart for 3 seconds, what would the change in speed be for the cart?

• 6 m/s

• 3 m/s

• 5 m/s

• 8 m/s

If the change in speed was 24 m/s for a 10 kg cart, how much time would be needed if a 60 N force was applied?

• 4 sec

• 6 sec

• 3 sec

• 5 sec