Question

A body with an initial velocity of 8 m/s moves along a straight line with constant acceleration and travels 640m in 40 seconds. For the 40s interval, find the (a) final velocity and (b) acceleration.

Answer 1

See below

Step-by-step explanation:

df = do + vo t + 1/2 at^2

640 = 0 + 8 (40) + 1/2 ( a)(40^2) shows a = .4 m/s^2

vf = vo + at

= 8 + .4 (40) = 24 m/s