Impulse

2) What are the units for Impulse?

• N
• N*s
• Ft
• kg

3) Cart A is pulled with a 2 Newton force for 2 seconds, and Cart B is pulled with a 1 Newton force for 3 seconds. Which cart experiences the greatest impulse? Remember FT = mΔv

• They are both the same
• Cart A
• Cart B

4) An airbag changes a 60 kg person's velocity from 40.0 m/s to 0.0 m/s, causing an impulse to act on the person. Which line represents the correct given information?

• 60 kg = m, 40.0 m/s = vf, 0.0 m/s - vi
• 60 kg = p, 40.0 m/s = vf, 0.0 m/s - vi
• 60 kg = m, 0.0 m/s = vf, 40.0 m/s - vi
• 60 kg = F, 0.0 m/s = vf, 40.0 m/s - vi

5) If the airbag changes a 60 kg person's velocity from 40.0 m/s to 0.0 m/s, what impulse must act on the person? What is this question asking you to find or calculate?

• Force
• Impulse
• Change in velocity

6) If the airbag changes a 60 kg person's velocity from 40.0 m/s to 0.0 m/s, what impulse must act on the person? Use one of the equations below to solve the problem and select the best answer.

• 2400 kg*m/s
• 1500 kg*m/s
• -2400 kg*m/s
• -1500 kg*m/s

7) You can calculate impulse by

• multiplying mass by acceleration
• multiplying mass by velocity
• dividing velocity by time
• multiplying force by time

8) Change in momentum is called

• Force
• Impulse
• Average momentum
• Velocity

9) In order to change the momentum of an object what two things are needed?

• Mass
• Force
• Time
• Velocity

10) A small egg with a mass of 0.035 kg is dropped from rest and falls at 11.5 m/s after 0.0017 sec. How much force was on the egg during the collision? Which line represents the correct given information?

• 0.035 kg = p, 0.0 m/s = Vf, 11.5 m/s = Vi, 0.0017 sec = t
• 0.035 kg = m, 11.5 m/s = Vf, 0.0 m/s = Vi, 0.0017 sec = t
• 0.035 kg = F, 11.5 m/s = Vf, 0.0 m/s = Vi, 0.0017 sec = t
• 0.035 kg = p, 11.5 m/s = Vf, 0.0 m/s = Vi, 0.0017 sec = J

11) A small egg with a mass of 0.035 kg is dropped from rest and falls at 11.5 m/s after 0.0017 sec. How much force was on the egg during the collision? What are you asked to calculate or find?

• Momentum
• Impulse
• Force
• Change in momentum