Question

Differentiate between speed ,velocity and acceleration.

Answer 1

Speed	Velocity	Acceleration
1.Change in distance per unit time is called speed.	1.Change in displacement of body per unit time is velocity.	1. Change in velocity per unit time is the acceleration.
2. It is a scalar quantity it only has magnitude and no direction. Its S.I unit is m/s.	2. It has both magnitude and direction. Its S.I unit is m/s.	2. It is a vector quantity and its S.I unit is m/s2