A car starting from rest accelerates at a rate of 8.0 m/s. What is its final speed at the end at 4.0 seconds?

1 Answer
Dec 2, 2015

v = 32m/s.

Explanation:

I will assume that you mean that the acceleration is 8.0 m/s^2, as 8.0m/s is a value for velocity, not acceleration.
Here, we use the formula v = u +at, where v is the final velocity, u is the initial velocity, a is the acceleration, and t is time. Let's substitute values, then:
v = u + at,
v = 0 + 8.0 * 4.0
v = 32,
v = 32m/s.

Hope it Helps! :D .