Answers

2015-06-16T20:19:33+05:30
Given, u=18km/h
18*1000/3600 m/s= 5m/s
a=9cm/s² = 9*0.01 m/s² = 0.09m/s²
s=200m
v=?
v²=u²+2as
v²=5²+2(0.09)(200)
v²=25+36
v²=61
v=√61=7.81 m/s
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