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Q.

A car falls off a ledge and drops to the ground in 0.5 sec.


Let g=10 m/s2, then find the height?


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a

1.25 m

b

12.5 m

c

125 m

d

0.125 m 

answer is A.

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Detailed Solution

A car falls off a ledge and drops to the ground in 0.5 sec then the height is 1.25 m
Given time =0.5 sec , g=10 m/s2
initial velocity will be zero due to free fall so, u=0
We know that
h=ut+12gt2,where h represents height
=0+12×10×0.5×0.5
=1.25 m
 
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A car falls off a ledge and drops to the ground in 0.5 sec.Let g=10 m/s2, then find the height?