Question

A car accelerated from initial position and then returned at initial point, then

• A. Velocity is zero but speed increases
• B. Speed is zero but velocity increases
• C. Both speed and velocity increase
• D. Both speed and velocity decrease

Answer 1

Answer: (A)

Velocity is zero but speed increases

Answer 2

As the net displacement = 0

Hence velocity = 0 ; but speed increases.

Note : $\frac{|\text{Average velocity}|}{|\text{Average speed}|} \leq 1$

$\Rightarrow |\text{Av.speed}| \geq |\text{Av.velocity}|$