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Force and Motion Review

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  • What happens to the speed of an object when the position does not change over a period of time?
    speed remains zero
  • The graph shows two bicycles riding during a race. How much more time did bicycle X spend stopped than bicycle Y?
    1 hour
  • The diagram shows four objects that are falling from different heights.
    object Z because it has the smallest size
    object Y because it has the smallest mass
    object X because it has the largest mass
    object W because it has the largest size
  • Which best explains what happens to the speed of a toy car as it rolls across a flat surface covered in carpet?
    It decreases in speed because of friction.
    It decreases in speed because of the force of gravity.
    It increases in speed because of the force of gravity.
    It increases in speed because of friction.
  • Which best describes friction?
    when objects rub together
    when objects pull towards each other
    when objects collide
    when objects move away from each other
  • Stacy wants to roll an 8-lb bowling ball and a 10-lb bowling ball along a flat surface. If she wants to have both bowling balls roll at the same speed, what must she do?
    use more force to push the 10-lb ball than is used to push the 8-lb ball
  • Sara rolled a basketball across some flat ground and noticed the ball slowed down and eventually stopped. Which best explains why the basketball stopped rolling?
    The force of friction pulled on the basketball.
  • Which object would need the least amount of force to move?
    a motorcycle
    a bike
    a car
    a truck
  • A student claims that gravitational force affects the motion of every object on Earth. Which statement best supports this claim?
    A ball falls to the ground when dropped from a height.
    A bicycle moves forward when a force is applied to the pedal
    A box needs more force to be pushed across a rough surface.
    A toy car stops rolling after traveling a distance.
  • The graph shows the speed of three race cars over a distance of 1.25 kilometers. The graph shows the speed of three race cars over a distance of 1.25 kilometers.
    Car 2 won and Car 1 came in last.
    Car 1 won and Car 2 came in last.
    Car 3 won and Car 1 came in last.
    Car 3 won and Car 2 came in last.
  • An object is moving with a speed of 12 meters/second in a straight line. What will be the distance traveled by the object in 5 seconds? (distance = speed × time)
    60 meters
  • Which graph could show a boy walking to his grandmother’s house and stopping along the way to eat his lunch?
    A
    D
    B
    C
  • Robby has two toy trucks. His red truck has a higher mass than his blue truck. What will he have to do to make the two trucks go the same speed?
    He can push both trucks for the same amount of time, but he will have to push the red truck with more force.
  • The graph below shows the journey of a car over a period of 12 hours. Which line segment shows a period of time when the car was stopped?
    segment DE
    segment BC
    segment CD
    segment EF
  • Which most affects a baseball’s motion when it is hit by a batter?
    the mass of the baseball and how hard the batter hits it
    the angle of the baseball and how hard the batter hits it
    the mass of the batter and how high the ball was thrown
    the mass of the batter and how fast the ball was thrown
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