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Forces and Motion Review
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If I push a 10 kg block with a force of 10 N, what is the acceleration of the block?
1 m/s^2 or m/s/s
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What force causes an object in motion to remain in motion?
Inertia
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In which direction does the force of friction work?
Opposite of motion
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What is Newton's 3rd law of motion?
For every action, there is an equal but opposite reaction.
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If you let go of the magnets in this picture what would they do?
Repel
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Which of Newton's laws is this showing?
Newton's third law
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If you let go of the magnets in this picture what would they do?
Attract towards each other
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What is Newton's 1st law of motion?
Intertia-An object in motion stays in motion and an object at rest stays at rest unless acted on by an unbalanced force.
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Where around a magnet is the magnetic field the strongest?
The poles (ends)
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I push Brilliant Bob on a skateboard and he has a mass of 60 kg and is accelerating at 2 m/s^2. What is the force I used to push him?
120 N
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What is Newton's 2nd law of motion?
F=m x a-The more mass, the more force you need to make it accelerate
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If a skateboarder has a mass of 20 kg and a momentum of 40 kg m/s, what is the velocity of the skateboarder?
20 m/s
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What is the orange arrow showing?
Friction force
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If a skateboarder has a mass of 20 kg and has a velocity of 10 m/s, what is their momentum?
200 kg m/s
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A swimmer pushing off from the wall of pool exerts a force of 1 N on the wall. what is the reaction force of the wall on the swimmer?
1 N
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