Question

A ball is thrown upwards. It returns to ground describing a parabolic path. Which of the following remains
constant?​

Answer 1

Explanation:

Acceleration along vertical component =−g (negative sign indicates downward direction), hence vertical component of velocity changes.

Net acceleration is not equal to zero and hence speed of the ball changes which implies kinetic energy of the ball changes.

Acceleration along horizontal = 0, hence horizontal component of velocity does not change.