In a shot-put event an athlete throws the shot put of mass 10 kg with an initial speed of 1m/s at 
from a height 
m above ground. Assuming air resistance to be negligible and acceleration due to gravity to be 10 
, the kinetic energy of the shot put when it just reaches the ground will be
Text Solution
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: Initial KE of the shotput
Initial PE of the shotput at a height 1.5 m above ground 
Total initial energy of the shotput = 155J
Since air resistance is negligible and final potential of the shotput as it hits the ground (h=0) is zero, kinetic energy of the shotput on hitting the ground =155J
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