Answers

2015-05-28T13:07:14+05:30
We know that,
2as= v2- u2

here,
v= 15 km/h
u=10km/h
a= 25km/h2

by substituting the values we get,

2as = v2 - u2
2 × 25× s= (15)(15)- (10)(10)
50 × s =  225-100
s= 125 / 50
therefore , 
s= 2.5 km

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