Question

A body starts with velocity 10 m/s and
acceleration 3 m/s2
. Find time taken to achieve
the velocity of 28 m/s.
1) 6 sec 2) 9 sec
3) 3 sec 4) none of these

Answer 1

Answer:

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Explanation:

Given,

a=10m/s2

u=0m/s

t=5sec

From 2nd equation of motion,

S=ut+21at2

S=0×5+21×10×5×5

S=0+125

S=125m