A constant force acting on a body of mass 3.0 kg changes its speed from `2.0 m s^-1` to `3.5 m s^-1` in 25 s. The direction of the motion of the body remains unchanged. What is the magnitude and direction of the force?

Certain force acting on a 20 kg mass changes its velocity from 5 m s^-1 to 2m s^-1 . Calculate the work done by the force.

A constant retarding force of 50 N is applied to a body of mass 20 kg moving initially with a speed of 15 ms^-1 . How long does the body take to stop?

A player throws a bail upwards with an initial speed of 29.4 m s^-1 . What is the direction of acceleration during the upward motion of the ball?

A body of mass 5 kg is acted upon by two perpendicular forces 8 N and 6 N. Give the magnitude and direction of the acceleration of the body.

A 10 kg weight is accelerated from rest to 20 m/s in 1 sec. What force acts on it:

An object of mass 100 kg is accelerated uniformly from a velocity of 5 m s^-1 to 8m s^-1 in 6 s. Calculate the initial and final momentum of the object. Also, find the magnitude of the force exerted on the object.

A position dependent force F=(7-2x+ 3x^2 )N acts on a small body of mass 2 kg and displaces it from x=0 to x=5m. Work doen in joule is .

What is the kinetic energy of a body of mass 50 kg after it has fallen from rest for 5 seconds? (g = 9.8 m/s^2 )

Give the magnitude and direction of the net force acting on a stone of mass 0.1 kg, (a) just after it is dropped from the window of a stationary train,(b) just after it is dropped from the window of a train running at a constant velocity of 36 km/h,just after it is dropped from the window of a train accelerating with 1 ms^2,just after it is dropped from the window of a train accelerating with 1M/S2

A force of 5N changes the velocity of a body from 10ms^-1 to 20ms^-1 in 5 sec. How much force is required to bring about the same change in 2 sec.