Motion, Speed, Distance, Time, Reference Point

An object is _____ if its position changes relative to another object.

• in motion

• at rest

• stationary

A truck driving at 60 km per hour travels 150 km. How long is it driving for?

• 9000 hours

• 0.4 hours

• 210 hours

• 2.5 hours

A place or object used for comparison to determine if another object is in motion is called a

• comparison point
• reference point
• point of view
• motion detector

A distance vs. time graph shows an object's

• frame of reference

• speed

• acceleration

• deceleration

All motion is described as relative because

• how do you ever really know if something is in motion
• motion means different things to different people
• everything in the universe is constantly in motion, so it depends on your frame of reference

Velocity is

• speed and acceleration
• constant speed
• a frame of reference
• speed in a given direction

Speed =

• distance / time

• time / distance

• distance * time

You walk 10 meters to math class in 20 seconds. Your average speed is

• 2 m/s

• 0.5 m/s

• 200 m/s

• 5 m/s

On a distance-versus-time graph, a straight line ALWAYS indicates that an object’s speed is _____.

• constant

• decreasing

• increasing

A horizontal line on a distance vs. time graph means the object's speed is

• increasing
• decreasing
• zero