# Velocity and Acceleration - Graph

Please give step by step solutions and answers so I can see how you got the answers and understand it please.

The graph on the page is a velocity versus time graph. Time is in seconds. The graph has points at (0,20),(5,40),(10,60),(15,80),(15,60),(15,40),(15,20),(15,0),(15,-20),(15,-40),(20,-40),(25,0),(30,0).

The questions below go with the graph.

1) Based on the graph of velocity versus time, what is the acceleration at t=10 seconds?

4.0 m/s^2

5.3 m/s^2

6.0 m/s^2

60 m/s

none of above

2)If the initial position of the object is 50 meters at t=0 seconds, what is the position of the object at 30 seconds?

450 meters

500 meters

1050 meters

1100 meters

none of these

3) What was the average velocity of the object from zero to 30 seconds?

15 m/s

16.7 m/s

35 m/s

36.7 m/s

none of these

4) Select all times when the acceleration is positive.

From 0 till 15 seconds

From 15 till 20 seconds

From 20 till 25 seconds

From 25 till 30 seconds

5) At what time is the object the furthest away from its starting point at t=0?

10 seconds

15 seconds

20 seconds

25 seconds

30 seconds

https://brainmass.com/physics/velocity-time-graphs/velocity-and-acceleration-graph-24237

#### Solution Preview

restated problem posting24176: velvoity and acceleration

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Please give step by step solutions and answers so I can see how you got the answers and understand it please.

The graph on the page is a velocity versus time graph. Time is in seconds. The graph has points at (0,20),(5,40),(10,60),(15,80),(15,60),(15,40),(15,20),(15,0),(15,-20),(15,-40),(20,-40),(25,0),(30,0).

The questions below go with the graph.

1) Based on the graph of velocity versus time, what is the acceleration at t=10 seconds?

4.0 m/s^2 ...

#### Solution Summary

The solution provides answers to the multiple choice questions and gives explanations for each.