. A coconut falls from a tree and hits the ground in 3 seconds. How tall is the tree and what is the velocity with which the coconut hits the ground?
A boy throws a ball at 40 m/s at an angle of 60° to the horizontal. Considering the horizontal and the vertical components of the velocity, find the time taken for the entire flight, the highest vertical distance reached and the horizontal distance travelled before the ball hits the ground.
(a) What resultant force produces an acceleration of 5 ms in a body of mass 650kg?
b) What acceleration is produced in a mass of 2kg by a resultant force of 12 N?

(c) What is the momentum of a man of mass 60 kg running with a velocity of 5 ms? If he collides with a stationary goat of mass 50 kg grazing in the pasture, what will be the velocity of the goat after collision, if the man's velocity drops to 3 m/s?
(d) What was the kinetic energy of the man in
(c) before colliding with the goat?​