Homework Help: physics

Posted by John on Sunday, April 15, 2012 at 3:48pm.

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.

physics - Elena, Sunday, April 15, 2012 at 3:58pm
The range of projectile is
L = v^2•sin2α/g,
v^2 = L•g/sin2α,
KE = mv^2/2 =m• L•g/2•sin2α

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