Answers

2015-07-21T11:14:39+05:30
Total displacement(s)=20m
time taken(t)=8s
initial speed(u)=0
S=ut +at^2/2  
Or, s= at^2/2

Or,20=a*8^2/2
or,10=a*64
or,a=10/64m/s^2

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