If average velocity of particle moving on a straight line is zero in a time interval, then

Question

If average velocity of particle moving on a straight line is zero in a time interval, then (A) Acceleration of particle may be zero (B) Velocity of particle must be zero at an instant (C) Velocity of particle may be never zero in the interval (D) Average speed of particle may be zero in the interval

Tardigrade Admin · Accepted Answer

If average velocity = zero, then displacement is zero it means particle takes a turn in the opposite direction and at the time of turning back velocity has to be zero.

Q. If average velocity of particle moving on a straight line is zero in a time interval, then

Acceleration of particle may be zero

Velocity of particle must be zero at an instant

Velocity of particle may be never zero in the interval

Average speed of particle may be zero in the interval

If average velocity = zero, then displacement is zero it means particle takes a turn in the opposite direction and at the time of turning back velocity has to be zero.