An athlete thtrew a short put of mass7.52kg through a distance of 24m when we projected a short put at angle of 30. Assuming there is no air resistance, what is the initial kinetic energy of the athlete.

Answer 1

The range of projectile is
L = v^2•sin2α/g,
v^2 = L•g/sin2α,
KE = mv^2/2 =m• L•g/2•sin2α