Practice Forces And Momentum (A.2) - Theme A: Space, Time, and Motion

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9 questions

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3 cards from this section. Quick, good the night before a test.
Exercise
6 questions · about 4 min · pass mark 70%. Hints available.
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Quiz
3 questions · about 2 min · pass mark 70%. Hints available.
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6 sample questions

Question 1.
What is Newton's First Law?
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Think about objects in motion.
Question 2.
What is friction?
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Consider what happens when sliding surfaces together.
3Question 3.
What is Newton's Second Law?
- The net force acting on an object is equal to the rate of change of its velocity.
- The net force acting on an object is equal to the rate of change of its momentum.
- Objects at rest tend to stay at rest.
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Think about how force relates to mass and acceleration.
4Question 4.
True or False: Friction increases the speed of moving objects.
- True
- False
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Consider your experience with sliding objects.
Question 5.
A 1500 kg car travels at 20 m/s. It collides with a 1800 kg truck at rest, and they stick together. Find their post-collision speed.
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Apply the conservation of momentum principle.
Question 6.
If a basketball player pushes off the ground with a force of 300 N for 0.2 seconds, what impulse does he generate?
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Think about the force applied over time.

5 more questions in this section. Enroll free to practise them all.