The kinetic energy of a particle continuously increases with time.
a) The resultant force on the particle must be parallel to the velocity at all instants
b) The resultant force on the particle must be at an angle less than 90o all the time
Its height above the ground level mus continuously decrease
The magnitude of its linear momentum is increasing continuously

Options

A. a, b are correct
B. b, c are correct
C. a, d are correct
D. b, d are correct

Answer

D