1. A ball is thrown at 50ms-1 at an angle of 30°towards a raised area as shown in the picture. Calculate the range (final horizontal displacement) of the ball.
Use vertical motion to find final velocity using v2 = u2 + 2as
find time from a =(v- u )/t
Find range from horiz. comp.
2. An arrow is shot at a target as shown below. If the speed of the arrow is 90ms-1 at what angle must the arrow be aimed?
From horizontal motion apply s=vt to make expression for t
Sub into a=(v-u)/t for vertical motion
solve to find θ