8th Grade Ch 1 Question Preview (ID: 39103)


Motion. TEACHERS: click here for quick copy question ID numbers.

Speed -time graphs show changes in direction.
a) true
b) false
c)
d)

The unit for acceleration is
a) km/h
b) m/s
c) m/s^2
d) miles per hour

If you travel in a direction that is opposite of your reference direction, your motion is
a) positive
b) negative
c)
d)

The process of changing position
a) motion
b) acceleration
c) velocity
d) speed

A measure of the change in velocity during a period of time
a) acceleration
b) average speed
c) displacement
d) position

Why is the statement, The runner's velocity was 4 m/s, incorrect?
a) He went faster
b) He went slower
c) He didn't include direction
d) He was traveling in km/s

Is this statement correct? The velocity of the runner was 4 m/s.
a) correct
b) incorrect
c)
d)

speed at a specific instant in time
a) instantaneous speed
b) average speed
c) constant speed
d) velocity

the difference between the initial (first) position and the final position
a) distance
b) direction
c) displacement
d) motion

A complete description of your position includes a
a) distance
b) direction
c) reference point
d) all of the above

The starting point you choose to describe the location, or position, of an object
a) acceleration
b) reference point
c) position
d) speed

What does NOT cause acceleration
a) speeding up
b) changing reference points
c) slowing down
d) changing directions

Velocity includes
a) speed and distance
b) distance and direction
c) speed and direction
d) reference point and speed

Farmer Dave's tractor travels 4000 m in 4 seconds. What is its speed?
a) 1000 m/s
b) 100 m/s^2
c) 1000 m/s^2
d) 4 m/s

A car was traveling 100 m/s. 5 seconds later, it was traveling 200 m/s. What is the acceleration?
a) 20 m/s
b) 20 m/s^2
c) 100 m/s
d) 200 m/s^2

A measure of the distance an object travels per unit of time
a) distance
b) displacement
c) journeys
d) momentum

The length of a path that an object in motion takes is called its
a) SPEED
b) VELOCITY
c) ACCELERATION
d) DISPLACEMENT

Speed at a specific instant in time
a) average speed
b) constant speed
c) instantaneous speed
d) reference point

What is a limit of a speed-time graph?
a) it doesn't tell you when something slows down
b) it doesn't tell you when something is at rest
c) it doesn't tell you when something speeds up
d) it doesn't tell you the direction something is going

A change in velocity during a time interval divided by the time interval during which the velocity changes
a) speed
b) velocity
c) average acceleration
d) motion

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