A ball is thrown vertically upwards with a velocity of 49 m/s.

Calculate

(i) The maximum height to which it rises,

(ii) The total time it takes to return to the surface of the earth.

A stone is thrown vertically upward with an initial velocity of 40 ms^-1. Taking g = 10 ms^-2, find the maximum height reached by the stone. What is the net displacement and the total distance covered by the stone?

Calculate the force of gravitation between the earth and the Sun, given that the mass of the earth = 6 × 10²⁴ kg and of the Sun = 2 × 10³⁰ kg. The average distance between the two is 1.5 × 10¹¹ m.