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