Question

the initial velocity of a body is 6m/s and its acceleration is 2m/s².in how much time will it attain a velocity of 20m/s? how much distance will it travel in this time

Answer 1

u=6m/s
a=2m/s^2
v=20m/s^2

v=u+at
20=6+2t
14=2t
t=7seconds

s=ut+1/2at^2
=6×7+1/2×2×7×7
=42+49
=91metres