A stone of mass 0.20 kg is thrown with speed 22 m s−1 from the edge of a cli% that is 32 m above the sea. The initial velocity of the stone makes an angle of 35° with the horizontal. Air resistance is neglected. a i Determine the horizontal and vertical components of the initial velocity.

ii Sketch graphs showing the variation with time of the horizontal and vertical components of velocity.

b i Calculate the maximum height above the cliff reached by the stone.

ii State the net force on the stone at the highest point in its path.

c i Using conservation of energy, determine the speed of the stone as it hits the sea.

ii Hence or otherwise, determine the time it took the stone to reach the surface of the sea.