APFIVE Linear Speed of a Reflected Laser Beam
A laser beam reflects off a rotating mirror that completes 1800 revolutions per minute. If the reflected beam traces a path on a wall 5.0 m away, what is the linear speed of the light spot on the wall?
A
62.8 m/s
B
15.7 m/s
C
9.42 m/s
D
31.4 m/s
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