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Acceleration Expression

Which expression gives the acceleration of a 1kg mass on a frictionless inclined plane at 30o to the horizon, given that g = 9.8 m/s2?

A. a = 9.8 m/s2

B. a = cos 30o x 9.8 m/s2 = 8.5 m/s2

C. a = sin 30o x 9.8 m/s2 = 4.9 m/s2

D. a = tan 30o x 9.8 m/s2 = 5.7 m/s2


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