PHYSICS · Single correct · A Level · Physics · Mechanics and materials · Mechanics and materials
Problem
78. A toy car moves 3.0 m to the North in one second. The car then moves at 9.0m/s due South for two seconds. What is the average speed of the car for this three second trip?
(A) 4.0m/s
(B) 5.0m/s
(C) 6.0m/s
(D) 7m/s