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Velocity-time Graph

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This graph is for understanding the concepts of variable velocity, uniform velocity, uniform acceleration, negative acceleration, displacement and average velocity of a body moving along a straight line.
Answer the following questions:

a. What is the velocity of the car at 2, 8, 16 and 20 s?
b. What is the acceleration of the car at 2, 8 and 16 s?
c. What is the displacement of the car in 4 and 20 s?
d. What is the average velocity of the car for the entire period of 20 s?

See graph attached.

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Solution Summary

One can draw the following information from a velocity-time graph: acceleration at any instant by finding the slope of the graph at the given instant; displacement of the body during a given interval of time; average velocity during a given interval of time.

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(a) 15, 30, 15 and 0 m/s respectively.

(b) Acceleratin during first four second (30 - 0)/4 = 7.5 ...

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