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

Answer:

#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 .