A tennis ball projected at an angle 0 attains a range R = 78. If the velocity imparted to the ball by the racket is 30 ms\(^{-1}\), calculate O. [ g = 10 ms...

If no net force acts on an object, the object maintains a state of rest or constant speed in a straight line. The above is a statement of Newton's

Which of the following pairs of physical quantities is made up of vectors?

A body is projected vertically upwards with a speed of 10 ms-1 from a point 2m above the ground. Calculate the total time taken for the body to reach the gro...

An object of mass m moves with a uniform speed v round a circular path of radius r. If its angular speed is \(\omega\), the magnitude of the centripetal forc...

A ball falling through a viscous liquid is acted upon by

When an elastic material is stretched by a force, the energy stored in it is

When the linear momentum of a body is constant, the net force acting on it

The knowledge of surface tension is applied in the following areas except in