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Cards In This Set
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What are the affects of gravity and air resistance?
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Gravity pulls down the objects falling, and air resistance slows down the acceleration of the falling object.
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Who was the scientist that argued that the mass of an object does not affect the acceleration of the gravity?
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Galileo Galilei was the scientist that argued that the mass of an object does not affect the acceleration of the gravity.
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What three factors affect the air resistance?
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The size, shape and speed affect the air resistance.
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Why don't space shuttle astronaut in orbit hit their heads on the ceiling of a falling shuttle?
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It is because that the astronauts and the space shuttle are both in free fall.
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What is centripetal force?
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Centripetal force is a force which causes an object to orbit in a circular path.
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What is terminal velocity?
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Terminal velocity is when the velocity is constant.
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What is the formula for acceleration?
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F/m or for using velocity -> (final velocity - initial velocity)/time
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What is inertia?
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The tendency of a moving object, to move.
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What is Newton's first Law of Motion?
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An object in rest, will remain in rest, and an object in motion, will stay in motion in a constant velocity unless an unbalanced force is acted on it.
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What is Newton's second Law of Motion?
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Acceleration depends on the mass of the object and the force applied on it.
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What is Newton's third Law of Motion?
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When an object exerts a force on the second object, the second object exerts an equal and opposite force on the first object.
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What is the formula for momentum?
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P=mv
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What is the Law of Conservation of Momentum?
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When two objects collide, the total momentum stays the same before and after the collision.
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Why is a heavier object harder to accelerate?
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Heavier objects are harder to accelerate because you need to apply more force on the object.
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Why don't action and reaction force cancel each other out?
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They don't cancel out because they act on different objects.
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