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Y5 Forces and Motion
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Why does a crumpled peice of paper land before a flat sheet of paper
Because there is less air resistance (luftmotstånd)
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What type of energy does the skateboarder have at K?
Potential Energy
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If two forces are moving in opposite directions what are they called?
Counterforces
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In the image, what force is acting in arrow A
Gravity
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If these kids are pulling with the same amount of force what will happen?
They wont move
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When the earth travels around the sun this is an example of which force?
Centripetal force
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What will NOT change if you go to the Moon: weight (Vikt) or mass (massa)?
Mass (massa)
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A type of friction that happens when air pushes against a moving object and makes it slow down
Air resistance
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What direction will the ball move if they both kick the ball at the same time?
Left (towards the yellow team player)
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What 2 things can increase friction?
More weight and a rougher surface. (mer vikt och en grövre yta)
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The force of an object is measured in ....
N (Newtons!)
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What has the least friction: a snowboard on a snowyhill or a runner on the road
The snowboarder
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(Pick a force): The bike with thick tires slows down faster than the bike with thin tires
Friction (or air resistance)
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(Pick a force) The man leans forward on his bike to go faster.
Air resistance
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Does an object with more mass (vikt) needs more force or less force to be moved?
More force
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What type of energy does a ball have when you kick it?
Kinetic Energy
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(Push or Pull): Pressing the gas pedal in a car
Push
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If two forces are equal and work in opposite directions what are they called?
Balanced Forces
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What force pulls a human back to earth when we jump?
Gravity
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Give an example of a force and a counter force:
Answers may vary (example: gravity and air resistance)
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