Question

is it possible in straight line motion a particles have zero speed and a non zero velocity? explain

Answer 1

no it is not possible

Answer 2

Answer:

Explanation:

No. It is not possible for an object to have 0 speed but non-zero velocity. It is because in a straight line motion when the magnitude of speed is zero, then with or without considering its direction , velocity will be zero only.

It can be proved as in the following.

Speed = Distance / time. = 0

Hence distance covered = 0

Therefore Displacement is also 0.

And hence Velocity = displacement / time = 0.

Therefore when speed is zero velocity is always zero.