A car travels a certain distance along a straight road (in the +x direction). Th

Question

A car travels a certain distance along a straight road (in the +x direction). The distance the car travels as a function of time is shown in the figure below. When the car changes speed it does so uniformly. Select the appropriate choice for each statement. The choices are true, false, greater than, less than, or equal to

1. The x-acceleration is ..... zero at 29 sec .

2. The x-acceleration is ..... zero at 15 sec.

3. The speed is ..... zero at 26 sec.

4. The acceleration magnitude at 38 sec is ..... the acceleration magnitude at 15 sec.

5. At 76 sec, the speed is as high as it gets.

6.The speed at 76 sec is ..... the speed at 48 sec

Explanation / Answer

1.equal to 2.greater than 3.equal to 4.greater than 5.false 6.less than

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