Acceleration Problem?

Question

I just need to see how this is done.

If an object accelerates at 15 m/s 2 and starts accelerating from rest, what is its speed after: one sec, two secs, five secs, ten secs.

please tell me how to do it!

Answer 1

use the acceleration formula

Answer 2

To get the speed at any time, just multiply the time by the acceleration.

After one sec, it's going 15 m/s.  After ten, it's going 150 m/s.

(This assumes constant acceleration from rest.)