A body is projected from ground obliquely. During downward motion, power delivered by gravity of it

A body of mass m is projected from ground with speed u at an angle theta with horizontal. The power delivered by gravity to it at half of maximum height from ground is

A : Power of the gravitational force on the body in a projectile motion is zero, once during its motion. R : Power delivered by the tension in the wire to a body in vertical circle is always zero.

A : Power of the gravitational force on the body in a projectile motion is zero, once during its motion. R : Power delivered by the tension in the wire to a body in vertical circle is always zero.

In the above question, the average power delivered by gravity is

In the above question, the average power delivered by gravity is

A body is thrown with a velocity v_0 at an angle theta_0 with horizontal. Find the (a) instantaneous power delivered by gravity after a time t measured from the instant of projection and (b) average power delivered by gravity during the time t.

A body is thrown with a velocity v_0 at an angle theta_0 with horizontal. Find the (a) instantaneous power delivered by gravity after a time t measured from the instant of projection and (b) average power delivered by gravity during the time t.