What did the scientist robert hooke claim ?

Robert Hooke (1635 - 1703) The Englishman Robert Hooke (18th July 1635 - 3rd March 1703) was an architect, natural philosopher and brilliant scientist, best known for his law of elasticity (Hooke's law), his book Micrographia, published in 1665 and for first applying the word "cell" to describe the basic unit of life.

Hooke was a brilliant scientist and his famous for his law of elasticity ( Hooke's law )

But he was also the first to apply the word "cell" to describe the basic unit of life.

Two colliding objects will exert equal forces upon each other. If the objects have different masses, then these equal forces will produce different accelerations.