explain the body moving in gravity with uniform
Answers
Answer:
According to law of inertia or Newton's first law of motion, a body in state of rest or of uniform motion remains in state of rest or of uniform motion unless it is acted upon by an external force. Hence a body in uniform motion required no force to keep them in uniform motion.
Given that force = mass x acceleration
Constant speed means there is no acceleration, therefore if acceleration = 0 force is also 0.
So a force is not necessary to maintain constant speed, assuming no friction.
In deep space, for example, objects will zoom along at a constant speed with no force on them whatsoever. That results from Newton's First law of motion, which states a body in motion tends to stay in motion unless acted on by a net force.
But in most cases, when v = constant and it requires a force F to maintain that constant speed, it's because there is a braking force of friction or air drag trying to stop the body from moving. And that's why a push or pull is necessary to maintain a constant speed, to offset those braking forces.
Answer:
The body moves when internal and external forces act on it. ... For example, when you fall, the force of gravity pulls you down. An object at rest will stay at rest. The acceleration of an object is proportional to the force.