Physical Science Ch 9 Motion

12 Questions | By Fzrinski | Last updated: Mar 21, 2022 | Total Attempts: 4218

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This is a quiz on Chapter Nine Motion with an emphasis on Describing and Measuring Motion, Speed and Velocity and Acceleration.

Questions and Answers

1.

When an object's distance from another object is changing.
- A.
  
  It is in motion
- B.
  
  It is speeding
- C.
  
  It has a high velocity
- D.
  
  It is acceleration
2.

Speed equals distance divided by
- A.
  
  Time
- B.
  
  Velocity
- C.
  
  Size
- D.
  
  Motion
3.

When you know both the speed and direction of an object's motion, you know the
- A.
  
  Average speed of the object
- B.
  
  Acceleration of the object
- C.
  
  Distance the object has traveled
- D.
  
  Velocity of the object
4.

The rate at which velocity changes is called
- A.
  
  Instantaneous speed
- B.
  
  Direction
- C.
  
  Acceleration
- D.
  
  Motion
5.

Which of these is an example of deceleration?
- A.
  
  A bird taking off for flight
- B.
  
  A roller coaster moving down a steep hill
- C.
  
  A car approaching a red light
- D.
  
  An airplane following a straight path
6.

To determine the acceleration rate of an object, you must calculate the change in speed during each unit of
- A.
  
  Velocity
- B.
  
  Time
- C.
  
  Motion
- D.
  
  Deceleration
7.

Average speed is
- A.
  
  Equivalent to velocity
- B.
  
  The rate at which an object is moving at a given instant
- C.
  
  The rate at which a slope changes
- D.
  
  The total distance traveled divided by the total time
8.

A place or oject used for comparison to determine if something is in motion is called
- A.
  
  A position
- B.
  
  A reference point
- C.
  
  A constant
- D.
  
  Velocity
9.

On a graph showing distance versus time, a horizontal line represents an object that is
- A.
  
  Moving at a constant speed
- B.
  
  Increasing its speed
- C.
  
  Decreasing its speed
- D.
  
  Not moving at all
10.

Changing direction is an example of a kind of
- A.
  
  Acceleration
- B.
  
  Speed
- C.
  
  Velocity
- D.
  
  Constant rate
11.

A bicyclist travels 30 kilometers in two hours, her average speed is
- A.
  
  30 km/h
- B.
  
  60 km/h
- C.
  
  15 km/h
- D.
  
  2 km/h
12.

In an acceleration graph showing speed versus time, a straight line shows the acceleration is
- A.
  
  Decreasing
- B.
  
  Increasing
- C.
  
  Changing
- D.
  
  Constant