The acceleration due to gravity near the surface of the earth is vec(g) . A ball is projected with velocity vec(u) from the ground. (a) Express the time of flight of the ball. (b) Write the expression of average velocity of the ball for its entire duration of flight.Express both answers in terms of vec(u) and vec(g).

The acceleration due to gravity near the surface of the earth is vec(g

1.	The acceleration due to gravity near the surface of the earth is vec(g) . A ball is projected with velocity vec(u) from the ground. (a) Express the time of flight of the ball. (b) Write the expression of average velocity of the ball for its entire duration of flight.Express both answers in terms of vec(u) and vec(g).
Answer» ANSWER :(a) `t = - (2vec(u).VEC(g))/(\|vec(g)\|^(2))` (B) `vec(V_(av)) = vec(u) - (vec(g)(vecu.vec(g)))/(\|vec(g)\|^(2))`