# Science

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

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3. 👁 763
1. Va = 14,400m / (2/3)h = 21,600m/h = Amy's sped.

Vb = 14,400m / 1h = 14400m/h. = Bill's
speed.

Amy = 21,600 - 14,400 = 7200m/h Faster.

Amy = 7200m/h * (1/3600)h/s = 2m/s faster than Bill.

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2. 6 m/s

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3. 2.7

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4. 2 ms

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