Answer to Question #154213 in Classical Mechanics for max

Question #154213

Car a is traveling east at 20m/s and car b is traveling east at 30m/s, if car b is 200m behind car a how long will it take for car b to catch car a?

Expert's answer

For moving in one direction:

"t=\\frac{s}{v_2-v_1}=\\frac{200}{30-20}=20~s."

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