Question

Asked Jan 23, 2019

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A car in stop-and-go traffic starts at rest, moves forward 25

m

in 8.0

s

, then comes to rest again

What is the constant speed

V

that characterizes the middle portion of its motion?

Express your answer using two significant figures.

Step 1

In a velocity-time graph , the area under the graph represent the displacement.

For first 4 second, displacement is given by the area of the triangle having height , h = V and base length = 4

So the displacement in first 4 second is given as

Step 2

For next 2 second, displacement is given by the area of the rectangle having height , h = V and width = 2

So the displacement in next 2 second is given as

Step 3

For next 2 second, displacement is given by the area of the triangle having height , h = V a...

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