If` (60hati + 15hatj- 3hatk)` N force is applied on a body to give it velocity `(2hati-4hatj+ 5hatk) m//s `then what, will be its power in watt?

A force vecF =(5hati+3hatj+2hatk)N acts on a particle , and the particle moves from the origin to a point vecr=(2hati-hatj) m. what will be the work done on the particle ?

Work done by a force vecF =(hati+2hatj+3hatk) N acting on a particle in displacing it from the point vecr_2=hati-hatj+2hatk to the point vecr_1=hati+hatj+hatk is

If A force vecE=-hati + 2hatj + 3hatk is applied on a body moving along z axis, and its displacement is 4m, then the amount of work done--------_.

A force F = ( 6hati — 8hatj + 10hatk ) N acting on a mass producess an acceleration of 1 m//s^2 . What will be the mass of the body?

For what value of a, the vectors 2hati-3hatj+4hatk and a hati-6hatj+8hatk are collinear ?

The area of the parallelogram formed by the vectors 3hati-2hatj+hatk and hati+2hatj+3hatk is -

find the projection of the vector hati-3hatj-7hatk on the vector 7hati-hatj-8 hatk

find the projection of the vector hati+2hatj+3hatk on the vector 5hati-2hatj+4 hatk