Question

Starting from rest, a person runs with a constant acceleration, traveling 40 meters in 10 seconds. What is their final velocity?

Answer 1

Final velocity v = 8.944 m/sec

Step-by-step explanation:

We have given distance S = 40 meters

Time t = 10 sec

As it starts from rest so initial velocity u = 0

From second equation of motion
`s=ut+(1)/(2)at^2`

`40=0* 10+(1)/(2)a10^2`

`a=0.8944m/sec^2`

Now from first equation of motion
`v=u+at`, here v is final velocity, u is initial velocity, a is acceleration and t is time

So
`v=u+at=0+0.8944* 10=8.944m/sec`