Question

A ball of mass 0.4 kg, initially at rest, is
kicked directly toward a fence from a point
20 m away, as shown below.
The velocity of the ball as it leaves the
kicker’s foot is 18 m/s at angle of 35 degrees above
the horizontal. The top of the fence is 4 m
high. The ball hits nothing while in flight and
air resistance is negligible.
The acceleration due to gravity is 9.8 m/s2.How far above the top of fence will the ball
pass? Consider the diameter of the ball to be
negligible.
Answer in units of m

Answer 1

you can use the max height for parabloic path equation.look it up on google you lazy bum!

Answer 2

See my later answer to the same question, submitted by "Elle".

http://www.jiskha.com/display.cgi?id=1319098671