In Mechanical Engineering, What is the difference between projectile motion and a rocket motion?

 

A projectile has no motor/rocket on it, so all of its momentum is given to it as it is launched. An example of a projectile would be pen that you throw across a room.A rocket or missile does have a motor/rocket on it so it can accelerate itself while moving and so resist other forces such as gravity.

-A projectile has no motor or rocket on it, so all of its momentum is given to it as it is launched.

An example of a projectile would be pen that you throw across a room.

 

-A rocket or missile does have a motor/rocket on it so it can accelerate itself while moving and so resist other forces such as gravity.

 

-In mechanics point of view projectile don't have any particular shape it is a point mass.

whereas rocket has a particular shape and hence it has center of gravity situated at particular point on its body.

Therefore rocket motion comes under kinetics and projectile comes under kinematic.

projectile starts at maximum speed and decreasing, while rockets start at zero speed and rapidly increasing

All answers are very comprehensive and define in a excellent way, thanks for great contribution from all of you.

 A projectile has no motor or rocket on it, so all of its momentum is given to it as it is launched. A rocket or missile does have a motor/rocket on it so it can accelerate itself while moving and so resist other forces such as gravity.

A projectile has no motor/rocket on it, so all of its momentum is given to it as it is launched.

Projectile moving at two dimension so it needs to be analized on two axis but the rocket at one dimension Plus the final velocity of the rocket is same as free falling while the projectile based on the angle

Projectile motion - is a motion of an item that being thrown from the ground and its falls back to the earth due to the gravity of the earth forming a curved path.

 

Rocket motion -  is a motion in which an object that can apply acceleration or thrust to itself.

A projectile has no motor/rocket on it.

A rocket or missile does have a motor/rocket on it.

IN PROJECTILE MOTION THE THROWING ANGLE IS LESS THAN90 DEGREE BUT IN ROCKET MOTION THROWING ANGLE IS90 DEGREE