Question

Is there any other simple definition of thrust ? Please give me an example with image.

Answer 1

Thrust is the force acting normally to the unit area.

OR

When a system expels mass in one direction with acceleration, the accelerated mass will cause an equal and opposite force to the system because of Newton’s 3rd law of motion, this reaction force is called Thrust.

E.g. Exhaust gases coming out of a rocket creates a thrust on the rocket to lift it up

However, thrust is also used in other sense also sometimes a force acting perpendicular to a body is also termed as thrust (like buoyant force)

the SI unit of density is...... kg/m3