What is the maximum height obtained by a 125g apple that is slung from a slingshot at an angle of 78º from the horizontal with an initial velocity of 18m/s? (a- 0.70m; b- 16m; c- 32m; d- 33m)

The height of the apple is modelled by the equation:



where v is the final vertical speed,
u is the initial vertical speed,
a the vertical acceleration experienced by the apple,
and s the displacement of the apple.

Post what you get! :)