Of the following situations, which one is impossible?

مندرجہ ذیل حالات میں سے ، کون سا ناممکن ہے؟

A body having constant velocity and variable acceleration

A body having zero velocity and non-zero acceleration

A body having velocity east and acceleration west

A body having velocity east and acceleration east

Impossible Situation:

Constant velocity requires zero acceleration (Newton’s First Law).

Variable acceleration would imply a changing net force, which must alter velocity (contradicting "constant velocity").

Possible Situations:

Zero velocity, non-zero acceleration:

Example: A ball at the top of its vertical toss (v=0, a=9.8 m/s² downward).

Velocity east, acceleration west:

Example: A car moving east while braking (deceleration acts west).

Velocity east, acceleration east:

Example: A car speeding up in the east direction.