Question

suppose you increase your walking speed from 1 m/s to 4 m/s in a period of 2 seconds what is your acceleration

Answer 1

a=v-u/t
a=4-1/2
a=3/2
a=1.5m/s2
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Answer 2

Final velocity, vf = 4m/s

Initial velocity, vi = 1m/s

Time taken, t = 2 seconds

Acceleration = (vf-vi)/t

= (4-1)/2

= 3/2 = 1.5m/s²