Q6.16Multiple choice
In a shotput event an athlete throws the shotput of mass 10 kg with an initial speed of 1m s –1 at 45° from a height 1.5 m above ground. Assuming air resistance to be negligible and acceleration due to gravity to be 10 m s –2 , the kinetic energy of the shotput when it just reaches the ground will be
- (a)2.5 J
- (b)5.0 J
- (c)52.5 J
- (d)155.0 J