Displacement of a body is `5 i+ 3 j - 4k m` due to the action of a force `6i+ 6j + 4k N` on it for `5 a`. The power in watt is

A particle acted on by constant forces 4i + j - 3k and 3i + j - k is displaced from the point I + 2j + 3k to the point 5i + 4j + k. The total work done by the forces is

A unit vector perpendicular to the plane of a = 2i - 6j -3k, b = 4i + 3j - k is

A body is displaced from position (hat i+hat j+hat k)m to position (4hati +5hatj + 6hatK) m under the action of force (5hati +4hatj-3hatk) N. The angle between the force and displacement vector is