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Soloha48 [4]
3 years ago
13

Bill and Amy want to ride their bikes from their neighborhood to school which is 14.4 kilometers away. It takes Amy 40 minutes t

o arrive at school. Bill arrives 20 minutes after Amy. How much faster (in meters/second) is Amy’s average speed for the entire trip?
Be sure to show all necessary metric conversion
Chemistry
1 answer:
Inessa [10]3 years ago
3 0

2 m/s

Explanation:

The distance to school is 14.4 kilometers which are equal to 14400 meters.

Amy takes 40 minutes which are equal to 40 × 60 = 2400 seconds to arrive at school.

Bill takes 40 + 20 = 60 minutes which are equal to 60 × 60 = 3600 seconds to arrive at school.

Amy’s average speed = distance (m) / time (s)

Amy’s average speed = 14400 m / 2400 s = 6 m/s

Bill’s average speed = 14400 m / 3600 s = 4 m/s

How much faster (in meters/second) is Amy’s average speed for the entire trip?

Amy’s average speed - Bill’s average speed = 6 m/s - 4 m/s = 2 m/s

Learn more about:

average speed

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