Question

PLEASE HELP!!

A swimmer starting from rest has a final velocity of 2.0 m/s after 20 seconds. What is her average acceleration?
O A. 18 m/s2
OB. 22 m/s2
OC. 0.10 m/s2
O D. 40 m/s2

Answer 1

`a=0.1\ m/s^2`

Step-by-step explanation:

Given that,

Initial velocity, u = 0

Final velocity, v = 2 m/s

Time, t = 20 s

We need to find the acceleration of the swimmer. The acceleration of an object is equal to the change in velocity per unit time. It can be given by :

`a=(v-u)/(t)\\\\a=(2\ m/s)/(20\ s)\\\\a=0.1\ m/s^2`

So, her average acceleration of the swimmer is
`0.1\ m/s^2`.