George is firing flashes at Gracie at the rate of 10 per second, according to his own watch. Gracie is racing away from George at a speed of $v=\frac{3}{5}c$. What is the rate at which Gracie receives the flashes?

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Question 2 of 2

2. Question

George is firing flashes at Gracie at the rate of 10 per second, according to his own watch. Gracie is racing toward George at a speed of $v=\frac{3}{5}c$ (the same speed as in the previous question, but in the opposite direction). What is the rate at which Gracie receives the flashes?