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Forces and motion

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  • A marble has to roll down a ramp and then travel a distance of 3 m. The ramp’s height is supported by 4 books. When the marble rolls down, it travels only 2 meters. How can the ramp be modified to increase the distance the marble travels?
    Make 6-book ramp
    Make 4-book ramp
    Make 3-book ramp
    Make 1-book ramp
  • Forces that cause an object to move are called __________ forces.
    friction
    balanced
    unbalanced
    gravity
  • Stored energy is _______.
    kinetic energy
    direction
    potential energy
    speed
  • An object that is sitting still has _________forces acting on it
    friction
    balanced
    gravity
    unbalanced
  • Stretching a coil or spring increases its ______.
    potential energy
    kinetic energy
    speed
    direction
  • Objects moving tend to stay moving because of the property of ………………
    inertia
    air resistance
    gravity
    friction
  • …………………….pull objects downwards.
    gravity
    inertia
    air resistance
    friction
  • Objects at rest tend to stay at rest because of the property of ………………
    gravity
    friction
    inertia
    air resistance
  • If the amount of kinetic energy an object has is……….. , then the object will move faster.
    increased
    fast
    slow
    decreased
  • …………… causes heat when rubbing your hands together.
    gravity
    inertia
    friction
    air resistance
  • Suppose you are riding a bike. As you increase speed, your__________
    energy of motion increases
    energy is used up
    stored energy increases
    energy of motion decreases
  • A boy pushes on a box and moves it across the room. This is an example of ......
    friction
    balanced
    unbalanced
    gravity
  • …………………….energy of a roller coaster is the energy of its motion.
    kinetic
    chemical
    potential
    stored
  • How can you determine the speed of a moving train?
    Divide the distance traveled by the time spent moving.
    Multiply the distance traveled by the time spent moving.
    Multiply the kinetic energy by the distance traveled.
    Divide the time spent moving by the direction traveled.
  • The distance traveled in an amount of time is called ………………
    velocity
    speed
    acceleration
    gravity
  • Because jaguars can run faster than sloths they move with more ………….energy than sloths
    kinetic
    stored
    potential
    chemical
  • .……………… describes when a moving object speeds up.
    acceleration
    speed
    gravity
    velocity
  • A car traveled 100 kilometers in two hour. Which is the speed of the bus?
    50 kilometers per hour
    70 kilometers per hour
    55 kilometers per hour
    60 kilometers per hour
  • Energy of motion is ____________ energy.
    chemical
    kinetic
    potential
    stored
  • The energy of motion is ___________
    not determined by an object's position above a surface
    decreased as your velocity increases
    determined by an object's position above a surface
    increased as your speed decreases