Question

Consider the car driving around a circular track. Once started, the driver maintains a speed of 45 m/h. Compare the driver's velocity with his acceleration in this case.

Answer 1

a=0.0125/t

Step-by-step explanation:

a=v-u/t

a=acceleration

v=final velocity=45m/h=0.0125m/s

u=initial velocity=0

a=0.0125/t

Answer 2

If the car is experiencing a change in velocity, the car is accelerating

Step-by-step explanation:

Speed is a scalar quantity (defined by magnitude and not by direction) while Velocity is a vector quantity (has a magnitude and a direction).

Magnitude of the velocity vector is the instantaneous speed while travelling and direction of the velocity vector will keep changing with change in position because it is tangential to the circle.

This means with every change in direction the travels on the circular track the speed is constant but the velocity would keep changing.

Acceleration is simply a change in velocity over time, this means if the car is experiencing a change in velocity, there is acceleration.