Kinematics Theory
3 years ago
thephysicsgrove
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26 QuestionsShow answers
  • Question 1
    30 seconds
    Q. The rate at which distance is covered is called speed.
    answer choices
    True
    False
  • Question 2
    30 seconds
    Q. Average speed is defined as the time it takes for a trip divided by the distance.
    answer choices
    True 
    False
  • Question 3
    30 seconds
    Q. Velocity is different from speed in that velocity is speed in a given direction.
    answer choices
    True
    False
  • Question 4
    30 seconds
    Q. A unit of velocity is the meter.
    answer choices
    True
    False
  • Question 5
    30 seconds
    Q. The rate at which velocity changes with time is called acceleration.
    answer choices
    True
    False
  • Question 6
    30 seconds
    Q. A unit of acceleration is meters per second.
    answer choices
    True
    False
  • Question 7
    30 seconds
    Q. When a car rounds a corner at a constant speed, its acceleration is zero.
    answer choices
    true
    false
  • Question 8
    30 seconds
    Q. Even though a car is slowing down, it is still accelerating, in the most general definition of acceleration.
    answer choices
    True
    False
  • Question 9
    30 seconds
    Q. A ball is thrown into the air. At the highest point, the ball has zero velocity and zero acceleration.
    answer choices
    True
    False
  • Question 10
    30 seconds
    Q. As a ball falls freely, the distance it falls each second is the same.
    answer choices
    True
    False
  • Question 11
    30 seconds
    Q. Unless stated otherwise, when we discuss the speeds of things, we mean with respect to the center of the universe.
    answer choices
    True
    False
  • Question 12
    30 seconds
    Q. When we discuss the motion of something, its motion is described relative to something else.
    answer choices
    True
    False
  • Question 13
    30 seconds
    Q. Speed is
    answer choices
    A measure of how fast something is moving
    always measured in terms of a unit of distance divided by a unit of time
    the distance covered per unit time
    all of the above
  • Question 14
    30 seconds
    Q. One possible unit of speed is 
    answer choices
    miles per hour
    light years per century
    kilometers per hour
    all of the above
  • Question 15
    30 seconds
    Q. Acceleration is defined as the CHANGE in 
    answer choices
    time it takes to move from one place to another place.
    velocity of an object
    distance divided by the time interval
    velocity divided by the time interval
  • Question 16
    30 seconds
    Q. Suppose you are in a car that is going around a curve. The speedometer reads a constant 30 miles per hour. Which of the following is NOT true?
    answer choices
    You and the car are accelerating.
    Your acceleration is constantly changing.
    Your velocity is constant.
    Your speed is constant.
  • Question 17
    30 seconds
    Q.

    A train travels 6 meters in the first second of travel, 6 meters again during the second second of travel, 6 meters again during the third second. It's acceleration is __ m/s2?

    answer choices

    0

    6

    12

    18

  • Question 18
    30 seconds
    Q. A  car starts from rest and after  7 seconds it is moving at 42  m/s. What is the ’s average acceleration?
    answer choices
    0.17
    1.67
    6
    7
  • Question 19
    30 seconds
    Q. As an object falls freely in a vacuum, its
    answer choices
    velocity increases
    acceleration increases
    both a and b
    none of the above
  • Question 20
    30 seconds
    Q. In the absence of air resistance, objects fall at constant 
    answer choices
    speed
    velocity
    acceleration
    all of the above
  • Question 21
    30 seconds
    Q. A ball is thrown upwards and caught when it comes back down. In the absence of air resistance, the speed of the ball when caught would be 
    answer choices
    less than the speed it had when thrown upwards.
    more than the speed it had when thrown upwards.
    the same as the speed it had when thrown upwards.
  • Question 22
    60 seconds
    Q. Suppose an object is in free fall. Each second the object falls 
    answer choices
    the same distance as in the second before.
    a larger distance than in the second before.
    with the same instantaneous speed.
    with the same average speed.
  • Question 23
    30 seconds
    Q. If you drop a feather and a coin at the same time in a tube filled with air, which will reach the bottom of the tube first?
    answer choices
    the feather
    neither
    the coin
  • Question 24
    30 seconds
    Q. Consider drops of water leaking from a water faucet. As the drops fall they 
    answer choices
    remain at a relatively fixed distance from each other
    get farther apart
    get closer together
  • Question 25
    30 seconds
    Q. If a freely falling object were somehow equipped with a speedometer, its speed reading would increase each second by 
    answer choices
    about 5m/s
    about 10m/s
    about 15m/s
    a variable amount
  • Question 26
    30 seconds
    Q. An object  accelerates at 2  m/s^2. Assuming the object starts from rest, how much time does it need to accelerate to a speed of 16  m/s?
    answer choices
    4 s
    8 s
    16 s
    1/16 s
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