Science speed and velocity

Speed

A scalar quantity that refers to “how fast an object is moving”

Velocity

A vector quantity that refers to “the rate at which an object changes its position”

Scalar

Are quantities that are fully described by a magnitude (or numerical value) alone

Vector

Are quantities that are fully described by both a magnitude and direction

Average speed

Distance/time

Average velocity

Displacement/time

Istanteous speed

The speed at any given instant in time

average speed

The average of all instantaneous speeds; found simply by distance/ time ratio

Displacement

Is a vector quantity that refers to “ how far out of place an object is” it is the objects overall change in position.

Distance

Is a scalar quantity that refers to “ how much ground an object covered” during its motion

Which of the following are valid units of acceleration?

A. M/s

B. M/s²

C. M/s/s

D. Mi/hr/s

E. Cm/s²

F. M²/s

B (m/s²), C (m/s/s), D (mi/hr/s), E (cm/s²⁾