First, read each problem carefully. Then check each box to show which givens were supplied in the problem's statement. On your papers, write down all of your givens as well as which variable represents the requested solution. You should next write down the formula that you think will permit you to solve the problem. Finally, substitute in your givens, show your mathematical solution process, and box in your numerical answer with its appropriate units. Don't forget to check your final numerical answer online.

Refer to the following information for the next five questions.
1. Over a period of 15 seconds a plane changes its velocity from 145 m/sec to 75 m/sec at a uniform rate of acceleration.
Refer to the following information for the next six questions.
2. A cart moving at 12 m/sec begins to coast up a hill with a uniform acceleration of 1.6 m/sec^{2}.
Refer to the following information for the next three questions.
3. A plane travels 500 meters while being uniformly accelerated from rest at a rate of 5 m/sec^{2}.
Refer to the following information for the next five questions.
4. A driver of a car going 21 m/sec suddenly sees the lights of a barrier 40 meters ahead. It takes 0.75 seconds before the driver realizes that he should hit his brakes. Once he begins breaking, the average acceleration the car produces is 10 m/sec^{2}.
Which order of the following st graphs would correctly put together a pictorial representation of this problem? 
 

