An aboriginal hunter is using a rope to tow a sled behind a snowmobile. The snow

Question

An aboriginal hunter is using a rope to tow a sled behind a snowmobile. The snowmobile has three times the mass of the sled. For the rope to remain taut as the hunter cautiously applies the brakes to the snowmobile, the impulse due to friction on the sled must be a. three times the backwards impulse due to friction on the snowmobile. b. one third the backwards impulse due to friction on the snowmobile. c. three times the forward impulse due to friction on the snowmobile. d. one third the forward impulse due to friction on the snowmobile. 3.

Explanation / Answer

The friction force is providing the impulse that changes the sled's momentum. The idea is that the friction force times the time it is acting must equal the change in the sled's momentum.

Answer should be Theree times the forward impulse due to friction on the snowmobile.

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