Prove Kepler’s third law of motion regarding velocity of planet.

Mention Newton's third law of motion.

State Kepler's third law of planetary motion and prove it considering circular orbits of planets .

Deduce Kepler's second laws of planetary motion for a planet.

Which law of motion is called the 'law of inertia'?

How Newton's third law of motion helps us in walking?

Mention Newton's first law of motion.

State Newton's second law of motion.

Starting from rest a body moves at first with constant acceleration a. Then it moves with a uniform velocity and finally comes to rest with a constant retardation a. If the displacement is s and time taken is t, prove that the body was in motion with uniform velocity for a time interval of sqrt(t^(2)-4s//a).