Question

What is projectile motion?

Answer 1

It is a motion of an object thrown from the earth's surface or from any surface and it moves along the curved path under the influence of gravity.

Answer 2

Projectile motion, is just a type a motion, in which,
the body is thrown with some initial velocity, and is left in the influence of gravity, is known as the projectile motion.

For example, 
The cricket ball hit by the cricket bat, etc...
Hope this will help you.