In which situation is the maximum possible work done?
when the angle between the force and displacement is 0°
B.
When the angle between the force and displacement is 180 |
when the angle between the force and displacement is 45°
D. when the angle between the force and displacement is 90%

Estimate the kinetic energy of the neptune with respect to the sun as the sum of the terms, that due to its daily rotation about its axis, and that due to its yearly revolution about the sun. [assume the neptune is a uniform sphere with mass = 1.0×1026 kg , radius = 2.5×1010 m , rotation period 16.1 h , orbital period 6.01×104 d and is 4.6×109 km from the sun.]