Q. 53.9( 123 Votes )

A stone is thrown

Answer :

u, = 5 
a, = -10
v, = 0
By using 
v= u +at
0 = 5+(-10)T
-5 = -10 T
t = 1/2=0.5
s=ut+1/2at ^2
s = 5(1/2) + 1/2(-10) ×1/4
s = (5/2-5/4) m
s = (10-5 / 4) m
s = 5/4 m
s = 1.25m

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