question_answer

   (i) According   to   universal   law   of gravitational every object in this universe attracts every other object. Explain why then a table and a chair lying in the same room do not collide with each other. (ii) An object is thrown vertically upwards to a height of 12 m. Calculate its (a) velocity with which it was thrown upwards. (b) time taken by the object to reach a height of 12 m.             

Answer:

                  (i) Gravitational force is the weakest force in nature, yet it helps in holding massive bodies in place throughout the universe. Due to this reason, table and chair do not collide.                    (ii) (a) (b)