An autos velocity increases uniformly from 6m/s to20m/s while covering 70m.find the acceleration and the time taken.

Answer 1

s = 6t + 1/2 at^2
v = 6+at

20 = 6+at
at = 14

70 = 6t+7t = 13t
t = 70/13
a = 14/t = 14*13/70 = 13/5

with appropriate units

Answer 2

Not clear

Answer 3

Tangina di ko gets

Answer 4

5 and 3