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IP You drive in a straight line at 20.0 m/s for 10.0

Chapter 2, Problem 20P

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QUESTION:

Problem 20P

IP You drive in a straight line at 20.0 m/s for 10.0 minutes, then at 30.0 m/s for another 10.0 minutes, (a) Is your average speed 25.0 m/s, more than 25.0 m/s, or less than 25.0 m/s? Explain, (b) Verify your answer to part (a) by calculating the average speed.

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QUESTION:

Problem 20P

IP You drive in a straight line at 20.0 m/s for 10.0 minutes, then at 30.0 m/s for another 10.0 minutes, (a) Is your average speed 25.0 m/s, more than 25.0 m/s, or less than 25.0 m/s? Explain, (b) Verify your answer to part (a) by calculating the average speed.

ANSWER:

Step 1 of 3

Here we have to calculate the average speed for the entire journey.

Given data,

First half

Speed

Time interval,

Using                         

Second half

Speed

Time interval,

Using                         

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