Derive the concept of gravity.
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Answers
As the ray is 2 theta then the angle of reflection will also be 2 theta
Answer:
Gravity is a force which tries to pull two objects toward each other. Anything which has mass also has a gravitational pull.Gravity is what holds the planets in orbit around the Sun and what keeps the Moon in orbit around Earth. The closer you are to an object, the stronger its gravitational pull is.
For any two objects or particles having nonzero mass, the force of gravity tends to attract them toward each other. He also demonstrated mathematically that gravitational fields cause distortion in space and time.
Near Earth's surface gravitational acceleration is approximately 9.8 m/s2, which means that, ignoring the effects of air resistance, the speed of an object falling freely will increase by about 9.8 metres per second every second.