Question

In projectile motion, power of the gravitational force

• A. is constant throughout
• B. is negative for first half, zero at topmost point and positive for rest half
• C. varies linearly with time
• D. is positive for complete path

Answer 1

Answer: (B), (C)

The correct options are
B is negative for first half, zero at topmost point and positive for rest half
C varies linearly with time

In projectile motion$,$ power of the gravitational force is negative fort first half$,$ zero at topmost point and positive for rest half and varies linearly with time$.$

Hence,

option $\left(B\right)$ and $\left(C\right)$ is correct answer.