Question

unit test: forces and motion
which term does 4.5 m/s describe?
o velocity
o position
o acceleration
o speed

Explanation:

Speed is a scalar quantity that measures how fast an object is moving and is expressed in units of distance per time. Velocity is a vector quantity (has both magnitude and direction). Position is a location. Acceleration is the rate of change of velocity. Since 4.5 m/s only gives a magnitude of how fast an object is moving without indicating direction, it is speed.

Answer:

D. speed