A car is stopped at a traffic light. It then travels along a straight road so that its distance from the light is given by

, where

= 2.40

and

= 0.100

.

1. Calculate the average velocity of the car for the time interval

= 0 to

= 10.0

.

2. How long after starting from rest is the car again at rest?

I know this is borderline physics problem, but I need to find the slope of this function, which will give me the average velocity, but I do not really know how.

When the time is 0, I received 2.3 meters.

When the time is 10, I received 340 meters.

However, when I did 337.7 meters divided by 10 seconds, I didn't get the right answer. Help is needed! thanks!