Linear Speed of a Reflected Laser Beam
A laser beam is incident on a mirror rotating at 1800 revolutions per minute. The reflected beam creates a spot of light on a wall 5.0 m from the mirror. What is the linear speed of the spot of light on the wall?
A
62.8 m/s
B
31.4 m/s
C
15.7 m/s
D
9.42 m/s
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