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FORCE AND MOTION
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Why does a crumpled piece of paper land before a flat sheet of paper?
THE FLAT PAPER HAS MORE AIR RESISTANCE
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Which has the least friction, a snowboard on a snowy hill or a runner on a track?
SNOWBOARD
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force that slows down an object by rubbing against another surface
friction
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If a rock and a wad of paper were dropped from the same height, which will hit the ground first?
rock
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What pulls a ball back to earth?
GRAVITY
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Which of Newton's Laws says that objects with greater mass require more force to accelerate them?
2ND LAW
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An object that is further off the ground will have ____ gravitational pull.
less
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Which law of motion states the idea of inertia?
1ST LAW
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In the image, what force is acting on arrow A?
GRAVITY
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A ball is moving in a certain direction. What would happen to the ball if a greater force was applied on the ball along its direction of motion?
THE BALL WILL ACCELERATE
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What is a force that opposes motion between two surfaces?
FRICTION
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THE FORCE OF AN OBJECT IS MEASURED IN ...............
NEWTONS
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What two factors affect gravity?
mass and distance
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A object with a lot of mass needs more force or less force to be moved?
MORE
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The greatest amount of force is required to move the metal block up which inclined plane?
C
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If these boys are pulling with the same amount of force. What will happen?
THEY WON´T MOVE
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If two forces are equal and opposite in direction, what are they called?
balanced force
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THE MASS OF AN OBJECT IS MEASURED IN __________
GRAMS
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A type of friction that occurs when air pushes against a moving object causing it to decelerate
AIR RESISTANCE
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What does Newton´s 3rd Law of motion state?
FOR EVERY ACTION THERE´S AN EQUAL OPPOSITE REACTION
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What type of force is required for an object to move?
unbalanced force
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The tendency of an object to continue moving is ___________________
INERTIA
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The larger the mass, the __________ gravity will pull on the object.
more
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