In which of the following cases will the average speed and average velocity have

Question

In which of the following cases will the average speed and average velocity have different values?

a. A car starts from rest and speeds up to a speed of 25 m/s, then travels at this speed for 1 hour.
b. A car travels to the east, then turns around and travels to the west.
c. A car traveling at a speed of 25 m/s slows down to 15 m/s, then speeds up again to a speed of 25 m/s.
d. A car traveling at a speed of 25 m/s slows down to a stop in 10 s.
e. A car starts from rest and speeds up to a speed of 25 m/s in 10 s.

Explanation / Answer

A car travels to the east, then turns around and travels to the west.

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