Average Velocity of Toy Car · PhysicsBowl 2014 #16

Physics · mechanics

Problem

A toy car initially moves to the right at 60.060.0 cms\frac{cm}{s}. Five seconds later, the car is moving at 40.040.0 cms\frac{cm}{s} to the left. The total displacement of the car during this time is 10.010.0 cmcm to the left of where it started. Which one of the following choices best represents the magnitude of the average velocity of the car during the five second motion? (A) 50.050.0 cms\frac{cm}{s} (B) 10.010.0 cms\frac{cm}{s} (C) 4.04.0 cms\frac{cm}{s} (D) 2.02.0 cms\frac{cm}{s} (E) 0.400.40 cms\frac{cm}{s}

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