Motion in a Str...

A ball is thrown vertically upward. At the highest point in its path, which of the following statements is correct?

A body of mass 1kg and 10kg are dropped simultaneously from the top of a tower. The ratio of the time taken by them to reach the ground is

A uniform force of (3 i + j) N acts on a particle of mass 2 kg. Hence the particle is displaced from position (2 i + k) m to position ( 4 i + 3 j - k) m. The work done by the force on the particle is,

The angular velocity (in rad/s) of a body rotating at N r.p.m. is

The kinematic equation of motion v = u+at is not applicable if :

Rain falls at a speed of 50m/s and a child walks on a straight road from east to west at a speed of 100m/s. To find the direction in which the child should hold the umbrella use

 Which of the following quantity does not remain constant during the uniform circular motion?

Two stones of different masses are thrown vertically upward with same initial velocity. Which one will rise to a greater height ?

The motion of a freely falling body is an example of:

The position of a particle is given by x = at³ where a is a constant. Find the velocity as a function of time.