Answers

2016-02-29T11:28:15+05:30
A = (v - u) / t
v = 60*5/18 = 16.66
u = 20*5/18 = 5.55
t = 6s
= 16.66 - 5.55 / 6
= 11.11 / 6
= 1.85 m/s sq.
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haha...deleted everything..great :P
LOL
My brother confused meee.. :P i.e. why i need toooo
dont be confused miss :)
:D
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2016-02-29T11:28:20+05:30

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Acceleration is rate of change of speed.
Final speed, v = 60 km/h =60×(5/18) =50/3 m/s
initial speed,u = 20 km/h =20×(5/18)= 50/9 m/s
acceleration= (v-u)/t = [(50/3)-(50/9)]/6 = [50
×(2/9)]/6 = 100/54 = 50/27 m/s²
                   = 1.85 m/s²
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