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Course: OCR A Level Physics A H556
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Curriculum

OCR A Level Physics A H556

1. Development of Practical Skills in Physics

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2. Foundations in Physics

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3. Forces and Motion

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4. Electrons, Waves and Photons

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OCR H556 chapter questions and answers

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Quiz

4.1.1 Impulse – Check yourself

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  • Questions count: 6
  • Passing grade: B+
  • Time limit: 10 minutes
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1.
The unit N s is equivalent to
kg m s−2
kg m s−1
kg m2 s−2
J s−1
2.
A 2.0 kg trolley changes velocity from 3.0 m s−1 to −1.0 m s−1. The impulse on it is
−8.0 N s
4.0 N s
−4.0 N s
8.0 N s
3.
Which statement explains why an air bag helps a passenger?
It increases the passenger's mass
It removes the impulse
It reduces the passenger's change in momentum
It increases the collision time so the average force is smaller
4.
The area under a force–time graph represents
work done
power
impulse
acceleration
5.
A constant 40 N force acts on a 5.0 kg mass at rest for 3.0 s. The final speed is
8.0 m s−1
24 m s−1
120 m s−1
0.38 m s−1
6.
A ball hits a wall at speed u and rebounds at speed u (same line). The impulse on the ball has magnitude
2mu
mu/2
0
mu
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Part of 3. Forces and Motion — see every lesson and quiz in this unit.
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