NOTE: The following problem changes with every person, so I need an individual a

Question

NOTE: The following problem changes with every person, so I need an individual answer. Maybe an explanation too if possible.

The answer choices can be: True, false, greater than, less than, and equal to.

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 1000 E 800 600 400 200 20 60 80 Time (s) At 50 sec, the speed is as high as it gets. True Greater than The x-acceleration is zero at 73 sec. Less than The acceleration magnitude at 15 sec is Less than The x-acceleration is zero at 58 sec . the acceleration magnitude at 37 sec. Less thanThe speed at 67 sec is the speed at 4 sec. By extrapolating the straight sections of the graph, you can estimate the time during which the speed is changing. This, with the change in speed, should let you estimate the magnitude of the acceleration. Submit Answer Incorrect. Tries 8/12 Previous Tries

Explanation / Answer

1) at 50 sec , speed is as high as it gets

TRUE , as the slope is maximum

2)

Equal to , as the slope (velocity of graph is constant)

3)

Here , as change in velocity is same in both cases , but the time taken in 37 s is larger

the magnitude of acceleration is greater than 37 s

4)

as the velocity is decreasing

acceleration is less than zero at 58 sec

5)

True , speed is zero at 26 s

6)

speed at 67 s is less than the speed at 4 s

Related Questions

Navigate

• Browse (All)
• Browse N
• Subjects

---

---

Integrity-first tutoring: explanations and feedback only — we do not complete graded work. Learn more.