The SI unit for speed is

• mph

• ft/sec^2

• m/s

Tags

NGSS.MS-PS3-1

On a speed vs. time graph, a line with a negative slope (going down) means that the object is

• speeding up

• slowing down

• not moving

Tags

NGSS.MS-PS3-1

An object is in motion when

• you observe the object moving

• the object's speed increases

• the object changes position relative to a stationary reference point

An object that changes position relative to a reference point is

• stationary

• in motion

• moving at a constant volume

Average speed can be represented by the equation

• distance/time

• time - distance

• time + distance

The (a)   of an object consists of its speed and direction.

• velocity

• average speed

• displacement

Speeding up, slowing down, and changing direction is best described as

• velocity

• displacement

• acceleration

Tags

NGSS.MS-PS3-5

The equation for finding acceleration is

• final speed - beginning speed / time

• beginning speed + final speed + time

• beginning speed + final speed - time

Peter runs in a constant direction on a a straight road. The velocity vs. time graph of Peter's motion shows a straight line with a negative slope. What does this line tell you about Peter's speed?

• It is increasing (going up)

• It is decreasing (going down)

• It is constant (stays the same)

On a distance vs. time graph, the line of an object at rest is a

• curved line with a slope of zero

• flat line with a slope of zero

• curved line with a positive slope