A Boy on a Skate Board Skates Off a Horizontal

question 57

Multiple Choice

A boy on a skate board skates off a horizontal bench at a velocity of 10 m/s. One tenth of a second after he leaves the bench, to two significant figures, the magnitudes of his velocity and acceleration are:

• A) 10 m/s; 9.8 m/s².
• B) 9.0 m/s; 9.8 m/s².
• C) 9.0 m/s; 9.0 m/s².
• D) 1.0 m/s; 9.0 m/s².
• E) 1.0 m/s; 9.8 m/s².

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