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Unit 3 Forces

Quiz by Kate Downey

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31 questions
Show answers
  • Q1
    What causes some objects to fall slower than others?
    forces
    air resistance
    gravity
    acceleration
    30s
  • Q2
    When a falling object reaches terminal velocity, the force of gravity __________ the force of air resistance.
    is unrelated to
    is less than
    equals
    is greater than
    30s
  • Q3
    In which direction is centripetal force?
    toward the center of a circle
    along the curve
    upward
    toward the edges of a circle
    30s
  • Q4
    What happens to the weight of astronauts when they are in orbit?
    it increases
    it does not change
    it becomes zero
    it decreases but does not become zero
    30s
  • Q5
    __________ measures an object's tendency to resist changing its motion.
    mass
    weight
    inertia
    gravity
    30s
  • Q6
    Newton's first law of motion states that __________.
    when a force is applied on an object, there is an equal force applied by the object in the opposite direction
    when a force acts on an object, its acceleration is in the same direction as the force
    an object will remain at rest or keep moving unless a force acts on it
    acceleration is calculated by dividing the force exerted on an object by the mass of the object
    30s
  • Q7
    When force is increased, what happens to acceleration?
    It fluctuates.
    It increases.
    It stays the same.
    It decreases.
    30s
  • Q8
    Newton's second law of motion is __________.
    F = m xa

    F= m/a

    p = m/v
    p = m × v
    30s
  • Q9
    Newton's third law of motion states that __________.
    an object at rest tends to stay at rest
    for every action force there is an equal and opposite reaction force
    an object in motion tends to stay in motion
    force is equal to mass times acceleration
    30s
  • Q10
    A(n) __________ is a push or a pull that one body exerts on another.
    velocity
    force
    acceleration
    motion
    30s
  • Q11
    The __________ is the combination of all the forces acting on an object.
    inertia
    force pair
    net force
    direction of motion
    30s
  • Q12
    Forces that cancel each other are called __________ forces.
    unbalanced
    neutral
    inactivated
    balanced
    30s
  • Q13
    Which best demonstrates friction?
    a car rolling to a stop at a traffic light
    an ice-skater sliding across the ice without noticeably slowing down
    the free fall of astronauts in orbit
    a baseball moving in a projectile motion
    30s
  • Q14
    A snow skier slowing to a stop after skiing down a mountain demonstrates __________ friction.
    sliding
    air
    rolling
    static
    30s
  • Q15
    The gravitational force exerted on an object is called the object’s ______.
    acceleration
    velocity
    weight
    mass
    30s

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