Question

In 5 meters, a person running at 0.8 m/s accelerates at 1.6 m/s2. How fast 16 points

Answer 1

They were going at a velocity 4.07m/s

Explanation:

Distance s =5 m

initial velocity u= 0.8 m/s

Acceleration a =1.6m/s2

We have to calculate the velocity with which they were going afterwards i.e final velocity.

Use the equation of motion

$v^2=u^2+2as\\=0.8^2+2\times 1.6\times 5\\=16.64\\v=4.07 m/s$

They were going with a velocity 4.07 m/s afterwards.