Question

a body of mass 20kg is moving with a uniform velocity 4m/s then the force acting on body remains​

Answer 1

Answer:

in an ideal world of physics where there are no friction forces to mention, answer is zero. The body is not accelerating, so F = ma, where a is the acceleration (a = 0) and m is the mass of 20 kg. So there is no force.

Let’s use your intuition. You are skating with your girlfriend and holding hands. As long as you go in a straight line and don’t move your feet (a = 0), you just coast. You can hold hands forever and nothing pulls them apart (F = 0). Same equations apply.

Answer 2

remains same throughout