In which type of collision do the two objects always have equal velocity after the collision a. perfectly inelastic b. inelastic c. no type of collision d. elastic

A option is correct

A). Equal to, greater than

Explanation:

Kinetic enerygy of an object is the energy that it possesses due to its motion. It can be defined as the work needed to accelerate a body of a given mass from rest to its stated velocity. Having gained this energy during its acceleration, the body maintains this kinetic energy unless its speed changes.

Kinetic energy is the energy an object has because of its motion. If we want to accelerate an object, then we must apply a force. Applying a force requires us to do work. After work has been done, energy has been transferred to the object, and the object will be moving with a new constant speed.

A force is applied on the second rock because it was thrown not dropped as the first one