Answers

2015-09-13T12:38:50+05:30
H=1/2g(t)square.

g value on earth is 9.8m/sec square.

h=1/2*9.8*(4)square

h=1/2*9.8*16

h=4.9*16

h=78.4m.

ORĀ 

take g as 10.

h=1/2g(t)square

h=1/2*10*(4)square

h=1/2*10*16

h=5*16

h=80m.




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