Question

Starting from rest a particle moves in a straight line
with accleration a = {2+(t-2)} m/s2. Velocity of particle
at the end of 4s will be :
(1) 16 m/s
(2) 20 m/s
(3) 8 m/s
(4) 12 m/s

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Answer 1

1)is 4

2) is 5

3)is 2

4)is 3

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Answer 2

we know

v = u +at

t = 4

u = 0

a = 4

v = 16 m/s

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