A force of ` 6 hat i+ 7 hat j` newton makes a body move on a rough loane with a velocity of (4 hat j = 3 hat k) ms^(-1)` . Calculate the power in watt.

A force of (2.6 hat(i) + 1.6 hat(j)) N acts on a body of mass 2 kg. If the velocity of the body at time, t = 0 is (3.6 hat(i) - 4.8 hat(j)) ms^(-1) , the time at which the body will just have a velocity along x-axis only is

A plane mirror is moving with velocity 4 (hat i) + 4 (hat j) + 8 (hat k) . A point object in front of the mirror moves with a velocity 3 (hat i) + 4 (hat j) + 5 (hat k) . Here, hat k is along the normal to the plane mirror and facing towards the object. The velocity of the image is

A plane mirror is moving with velocity 4 (hat i) + 4 (hat j) + 8 (hat k) . A point object in front of the mirror moves with a velocity 3 (hat i) + 4 (hat j) + 5 (hat k) . Here, hat k is along the normal to the plane mirror and facing towards the object. The velocity of the image is

A plane mirror is moving with velocity 4 (hat i) + 4 (hat j) + 8 (hat k) . A point object in front of the mirror moves with a velocity 3 (hat i) + 4 (hat j) + 5 (hat k) . Here, hat k is along the normal to the plane mirror and facing towards the object. The velocity of the image is

A plane mirror is moving with velocity 4 (hat i) + 5 (hat j) + 8 (hat k) . A point object in front of the mirror moves with a velocity 3 (hat i) + 4 (hat j) + 5 (hat k) . Here, hat k is along the normal to the plane mirror and facing towards the object. The velocity of the image is

If vec F =2 hat i + 3hat j +4hat k acts on a body and displaces it by vec S =3 hat i + 2hat j + 5 hat k , then the work done by the force is

A force (4hat(i)+hat(j)-2hat(k)) ms^(-1) The power exerted is