Edexcel iGCSE Double Award Physics Revision questions with answers.

Edexcel iGCSE Double Award Physics |\ |\ |\ |\ |\




Revision questions with answers |\ |\ |\




independent variable - CORRECT ANSWERS ✔✔the factor you |\ |\ |\ |\ |\ |\ |\ |\


change in an experiment that causes a change
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dependent variable - CORRECT ANSWERS ✔✔the measured
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variable that depends on the value of the independent variable
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conclusion - CORRECT ANSWERS ✔✔the answer to the problem
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written as a statement
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distance - CORRECT ANSWERS ✔✔how far an object has moved
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displacement - CORRECT ANSWERS ✔✔how far an object has |\ |\ |\ |\ |\ |\ |\ |\ |\


moved from its original starting place
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average speed - CORRECT ANSWERS ✔✔total distance divided by
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total time
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balanced forces - CORRECT ANSWERS ✔✔forces that are equal in
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size and opposite in direction; they do not move an object and
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the net force is equal to zero.
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, unbalanced forces - CORRECT ANSWERS ✔✔forces that are |\ |\ |\ |\ |\ |\ |\ |\


unequal in size and the direction is the same; they cause an
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object to move |\ |\




velocity - CORRECT ANSWERS ✔✔the speed and direction of an
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object's motion; EX: 25 mph North;
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is a vector ie. it has magnitude and direction5 km/hr upstream
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The Law of Conservation of Momentum - CORRECT ANSWERS
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✔✔any time two or more objects interact they may exchange
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momentum but the total amount of momentum stays the same;|\ |\ |\ |\ |\ |\ |\ |\ |\ |\


momentum before = momentum after M1XV1 = M2V2 |\ |\ |\ |\ |\ |\ |\ |\


momentum is conserved |\ |\




Newton's 1st Law of Motion - CORRECT ANSWERS ✔✔an object in
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motion stays in motion and an object at rest stays at rest until a
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net force acts upon the object (LAW OF INERTIA)
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Newton's 2nd Law of Motion - CORRECT ANSWERS ✔✔Force=
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mass x acceleration; the larger something is, the harder it is to
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move


Newton's 3rd Law of Motion - CORRECT ANSWERS ✔✔Forces
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always occur in pairs; the forces will always be equal and
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opposite (for every action there will be an equal and opposite
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reaction)