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Course: AP PHYSICS 1
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AP PHYSICS 1

1. Kinematics

0/29

2. Force and Translational Dynamics

0/73

3. Work, Energy, and Power

0/31

4. Linear Momentum

0/29

5. Torque and Rotational Dynamics

0/37

6. Energy and Momentum of Rotating Systems

0/27

7. Oscillations

0/21

8. Fluids

0/30
Quiz

4.1.2 Rate of Change of Momentum – Check yourself

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  • Questions count: 6
  • Passing grade: B+
  • Time limit: 10 minutes
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1.
Newton's second law, expressed using momentum, states that net force equals
m Δv
Δp / Δt
Δp × Δt
Δt / Δp
2.
A 2.0 kg object's velocity changes from 3.0 m/s to 8.0 m/s in 2.0 s. The average net force is
2.5 N
10 N
22 N
5.0 N
3.
A ball hits a wall at speed v and rebounds at speed v. Compared with stopping at the wall, the change in momentum magnitude is
Twice as large
Half as large
Four times as large
The same
4.
An airbag reduces injury because it
Reduces the change in momentum
Increases the driver's mass
Increases the collision time, so the average force is smaller
Removes the momentum change
5.
The gradient of a graph of momentum against time represents
Impulse
Kinetic energy
Mass
Net force
6.
A 0.20 kg ball moving at 10 m/s is caught and stopped in 0.050 s. The average force is
2.0 N
40 N
400 N
100 N
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Part of 4. Linear Momentum — see every lesson and quiz in this unit.
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