Question

A car moving at a speed of 8 m/s enters a highway and accelerates at 3 m/s2. How fast will the car be moving after it has accelerated for 56 m?

Answer 1

the speed of the car moving after accelerating for 56 m is 20 m/s

Step-by-step explanation:

The computation is shown below:

As we know that

Vf^2 = Vi^2 + 2ad

= ( 8m/s )^2 + 2 ( 3m/s2 ) ( 56m)

= 400 m2/s2

Vf = 20 m/s

Hence, the speed of the car moving after accelerating for 56 m is 20 m/s