A block of mass 2 kg is pulled up a rough inclined plane of inclination $30^\circ$ with a constant force $F$ parallel to the incline. The coefficient of kinetic friction between the block and the plane is 0.2. If the block moves with a constant speed of 2 m/s, the power delivered by the force $F$ is:

A force of $10\hat i - 3\hat j + 6\hat k$ N acts on a body of mass 100 g and displaces it from $6\hat i + 5\hat j - 3\hat k$ m to $10\hat i - 2\hat j + 7\hat k$ m. The work done is

A person holds a bucket of weight 60 N. He walks 7m along the horizontal path and then climbs up a vertical distance of 5 m. The work done by the man is

A constant force of 10 N displaces an object by 5 m in the direction of the force. The work done is:

A particle moves along the x-axis under the influence of a force $F(x) = -kx^2$. If the particle moves from $x = a$ to $x = 2a$, the work done by the force is:

If $\overrightarrow F = 2\widehat i + 3\widehat j + 4\widehat k$ acts on a body and displaces it by $\overrightarrow S = 3\widehat i + 2\widehat j + 5\widehat k$ then the work done by the force is

A force of 20 N acts on a box, moving it 4 meters horizontally. If the force is applied at an angle of 30° to the horizontal, what is the work done?

An object moves along a straight line path from P to Q under the action of a force $\left( {4\hat i - 3\hat j + 3\hat k} \right)$ N. If the coordinates of P and Q, in metres, are (3,3,-1) and (2,-1,4) respectively, then the work done by the force is

A force $\vec{F} = (3\hat{i} + 4\hat{j})$ N acts on a particle displacing it by $\vec{s} = (2\hat{i} - 5\hat{j})$ m. The work done by the force is:

When a force is applied on a moving body, its motion is retarded. Then the work done is

A force of 5 N moves the particle through a distance of 10 m. If 25 J of work is performed, then the angle between the force and the direction of motion is