The kinetic energy of a particle continuously icreses with time

Options

A. (a) The resultant force on the particle must be parallel to the velocity at all instants
B. (b) The resultant force on the particle must be at an angle less than `90^@` with velocity all the times.
C. (c) Its height above the ground level must continuously decrease.
D. (d) The magnitude of its linear momentum is increasing continuously.

Answer

B, D

Explanation

b. Think in terms of positive work.
c. Since the kinetic energy is increasing, momentum would also increase.