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Basic Physics - Chapter Two

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  • True or False: Distance includes direction.
    false
    true
  • A bike moves 30 meters in 6 seconds. What is the speed?
    5 m/s
  • True or False: Heavier objects have more momentum if the speed is the same.
    true
    false
  • Which object would have the greatest momentum (p = m x v)
    a heavy object moving fast
    a heavy object moving slow
    a light object moving fast
    a light object moving slow
  • A 2 kg ball moves at 3 m/s. What is the momentum?
    6 kg x m/s
  • What is the formula for speed?
    speed = distance / time
  • If mass increases and speed stays the same, the momentum will...
    increase
    stay the same
    decrease
  • Which of these has more momentum?
    3 kg at 15 m/s
    8 kg at 5 m/s
    6 kg at 10 m/s
  • A runner travels 20 meters in 5 seconds. What is the speed?
    4 m/s
  • What is the formula for velocity?
    velocity = displacement / time
  • What is displacement?
    the speed over time
    the change in position with direction
    the total path traveled
  • An object is accelerating when it...
    moves at the same speed in a straight line
    is not moving
    changes speed or direction
  • Which unit is commonly used for speed?
    meters
    north
    seconds
    meters per second
  • Which of these has a displacement of zero?
    walking 5 m south
    walking 5 m north and then 5 m west
    walking 5 m north
    walking 5 m north and then 5 m south
  • Which word describes a change in speed, direction, or both?
    distance
    velocity
    acceleration
  • What is distance?
    how far something travels
    how fast something travels
    the straight-line path from start to finish
  • Speed is...
    how fast and in which direction something moves
    the direction something moves
    how fast something moves
  • If an object slows down it is...
    not accelerating
    accelerating
  • A car travels 100 meters in 10 seconds. What is the speed?
    10 m/s
  • True or False: An object can accelerate by only changing directions.
    false
    true
  • Which would likely have more momentum?
    a bike going 30 m/s
    a parked car
    a truck going 10 m/s
  • True or False: An object can accelerate without speeding up.
    true
    false
  • A ball slows from 8 m/s to 4 m/s in 2 seconds. What is the acceleration?
    -2 m/s2
  • True or False: An object can accelerate without changing speed.
    true
    false
  • Distance and displacement are the same when...
    the object stops
    direction changes
    the object moves in a straight line
  • A 10 kg cart moves at 3 m/s. What is the momentum?
    30 kg x m/s
  • What does velocity include that speed does not?
    direction
    time
    distance
  • What is the formula for acceleration?
    acceleration = (final velocity - initial velocity) / time
  • What is the formula for momentum?
    momentum = mass x velocity
  • A skateboarder's speed increases from 2 m/s to 6 m/s in 4 seconds. What is the acceleration?
    1 m/s2
  • Two horses run at the same speed. Which has more momentum?
    the horse with more mass
    both horses have the same momentum
    the horse with less mass
  • What is momentum?
    speed x time
    mass x velocity
    distance / time
  • Which example shows a velocity?
    5 s
    5 m
    5 m/s
    5 m/s west
  • True or False: Velocity needs direction.
    true
    false
  • A 5 kg object moves at 4 m/s. What is the momentum?
    20 kg x m/s
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