Question

4. A body starts from rest with an acceleration of 3 ms. What will be its velocity after
6 seconds?
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Answer 1

Answer:

After 1 second, the velocity is 4.5+1.5=6 m/s. After 3 seconds, the velocity is 4.5+3×1.5=9 m/s

Answer 2

u=0

a=v-u/t

3=v/6

v=18m/s