<plain your observations. What did you observe as you completed the task of measuring shadows each time? What hanged as you repeated your attempts? Submit your data chart here.
1.

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the first american roller coaster was the mauch chunk switchback railway, built in the mountains of pennsylvania in the mid-1800s. the track, originally built to send coal to a railway, was reconfigured as a "scenic tour."

hi there!

out of the two, (b) precision would be more reasonable.   however, both a and b could be pretty reasonable.

-awesomerepublic   : )

c) power lifting, will be your answer.

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deku ❤