If an antelope is running at a speed of 10 mis, and can maintain that horizontal velocity when it jumps, how high must it jump in order to clear a horizqntal distance of 20m ? .)

Explanation:

Given

velocity of antelope

antelope needs to cover a horizontal distance of 20 m

considering horizontal velocity antelope needs to cover 20 m in t sec which is given by

i.e. in 2 sec antelope needs to jump and return to ground for zero vertical displacement

h=vertical displacement

a=acceleration

t=time

for,  , t=1 s

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