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The difference between speed and velocity is ___. Speed is measurable Speed can change over time Velocity is speed in a given direction Speed accurately describes an object’s motion   A rate of change in velocity is called ____. Speed Inertia Motion Acceleration   When a car has constant speed and then starts to slow down, ___. Only its speed changes Only its acceleration changes Its speed and acceleration change Neither its velocity nor acceleration change

The difference between speed and velocity is ___. Speed is measurable Speed can change over time Velocity is speed in a given direction Speed accurately describes an object’s motion   A rate of change in velocity is called ____. Speed Inertia Motion Acceleration   When a car has constant speed and then starts to slow down, ___. Only its speed changes Only its acceleration changes Its speed and acceleration change Neither its velocity nor acceleration change

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The difference between speed and velocity is ___.

  1. Speed is measurable
  2. Speed can change over time
  3. Velocity is speed in a given direction
  4. Speed accurately describes an object’s motion

 

A rate of change in velocity is called ____.

  1. Speed
  2. Inertia
  3. Motion
  4. Acceleration

 

When a car has constant speed and then starts to slow down, ___.

  1. Only its speed changes
  2. Only its acceleration changes
  3. Its speed and acceleration change
  4. Neither its velocity nor acceleration change

 

A train accelerates from 100 m/s west to 170 m/s 

    west in 10 seconds. What is the acceleration of the  

    bus?                               a = Vf – Vi 

                                                   time 

  1. 7 m/s2
  2. 7 m/s2
  3. 80 m/s2
  4. 280 m/s2

  

A biker rides 80 meters in 12 seconds.  His average speed is ___. (s=d/t)

  1. 15 m/s
  2. 67 m/s
  3. 58 m/s
  4. 92 m/s

 

According to Newton’s 3rdLaw of Motion, for every action, there is ___.

  1. Work being done
  2. An equal and opposite reaction
  3. An unbalanced force on the reaction.
  4. An equal reaction continuing the direction of motion

 

A rocket blasting off from Earth is an example of ___. 

  1. Average speed
  2. Circular motion
  3. Action and reaction
  4. Force = mass x acceleration

 

An astronaut’s weight will be different on the moon than it is on Earth due to the difference in the ____.

  1. Pull of gravity
  2. Shape of the astronaut
  3. Volume of the astronaut
  4. Atmosphere of the moon

 

Based on Newton’s Laws, the object with the greatest inertia is a ___.

  1. Book sitting on a desk
  2. Truck parked in a driveway
  3. Tennis ball hit into the air
  4. Man running on a track

 

A car comes to a sudden stop and the passengers continue to move forward until their seatbelts stop them.  This explains ___.

  1. Speed
  2. Inertia
  3. Velocity
  4. Acceleration

 

A pushor a pull on an object is called ___.

  1. Work
  2. Force
  3. Inertia
  4. Newton’s 2ndLaw 

 

If equal forces are applied to a ping pong ball, tennis ball, baseball, and bowling ball, the ball with the greatestacceleration would be a ___.

  1. Ping pong ball
  2. Tennis ball
  3. Baseball
  4. Bowling ball

 

“An object at rest tends to stay at rest, and an object in motion tends to stay in motion unless acted upon by an unbalanced force,” is stated in the Law of ___.

  1. F=ma
  2. Inertia
  3. Acceleration
  4. Action and Reaction

 

According to Newton’s second law, the mass of an object is 145kg and it is accelerating at a rate of 15m/s2.  The object’s force would be___. (F=ma) Show your work. 

  1. 67N
  2. 130N
  3. 160N

2,175N

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