Two cars, A and B, start side by side and accelerate from rest. The figure shows the graphs of their velocity functions and a UK A B a 2a (a) Which car is ahead after two minutes? O car A O car B t (min) Explain. O The area under curve A is greater than the area under curve B. O The area under curve B is greater than the area under curve A. (b) What is the meaning of the area of the shaded region? O It is how much faster A is traveling than B after 2 minutes. O It is how much faster B is traveling than A after 2 minutes. O It is the distance by which A is ahead of B after 2 minutes. O It is the distance by which B is ahead of A after 2 minutes. (c) Which car is ahead after four minutes? O car A car B Explain. O The area under curve A is greater than the area under curve B. O The area under curve B is greater than the area under curve A. (d) Estimate the time t at which the cars are again side by side. min t =

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