Free Fall

What is meant by free-fall?

What happens if a body falls towards the earth?

In a free fall, weight of a body becomes effectively zero.

A particle is released from rest from a height. Find the distance it falls through in 3s.

A ball is released from rest from a height. Find its speed at $\mathrm{t} = 3\mathrm{s}$ after release.

Explain the concept of weight as normal reaction.

A body falls freely towards the earth with

At the start of motion, an object under free fall will have : 

Any motion of a body where gravitational force is the only force acting on that body is called _____.

A body is said to be in free fall, when only the _____ force acts on it.

A body is said to be in free fall, when only the _____ force acts on it.

The motion of an object where gravity is the only force acting upon it is known as 

Two objects of different masses falling freely near the surface of moon would 

Gravitational force of earth is called _____.

Two objects of masses $m_1$ and $m_2$ having the same size are dropped simultaneously from heights $h_1$ and $h_2$ respectively.  Find out the ratio of time they would take in reaching the ground. Will this ratio remain the same if : both of them are hollow, size remaining the same in each case. Give reason.

Two objects of masses $m_1$ and $m_2$ having the same size are dropped simultaneously from heights $h_1$ and $h_2$ respectively.  Find out the ratio of time they would take in reaching the ground. Will this ratio remain the same if : one of the objects is hollow and other is solid.

What do you mean by free fall?

What is meant by free fall? Is there any change in velocity of a freely falling body? Discuss.

State SI unit of gravity.

What do you mean by gravity?