A single photogate is programed to start a timer when it is blocked and stop the

Question

A single photogate is programed to start a timer when it is blocked and stop the timer when it is unblocked.

A sphere with constant velocity passes through the photogate. Using the appropriate data in the table determine the speed of the sphere as it passes through the photogate. Assume that the beam of the photogate is aligned such that the photogate will collect data based on the sphere's diameter.

Heres the table

Diameter (mm) 18.0

time from photogate (s) .00490

Your work should include a diagram of when the timer begins and ends.

What is the speed of the sphere in m/s?

Explanation / Answer

well v = d/t = 18.0E-3/0.0049=3.67 m/s

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