A 69 kg canoeist stands in the middleof her 18 kg canoe. The canoe is 3.0 mlong,

Question

A 69 kg canoeist stands in the middleof her 18 kg canoe. The canoe is 3.0 mlong, and the end that is closest to land is 2.5 m from the shore.The canoeist now walks toward the shore until she comes to the endof the canoe. (a) When the canoeist stops at the end of hercanoe, is her distance from the shore equal to, greater than, orless than 2.5 m?
1 equal greater    less
Explain.
2
(b) Verify your answer to part (a) by calculating the distance fromthe canoeist to shore.
3 m (a) When the canoeist stops at the end of hercanoe, is her distance from the shore equal to, greater than, orless than 2.5 m?
1 equal greater    less
Explain.
2
(b) Verify your answer to part (a) by calculating the distance fromthe canoeist to shore.
3 m 1 equal greater    less 1 equal greater    less 1

Explanation / Answer

greater than Assuming the canoe is frictionless with thewater, the canoeist is no closer to shore then when they started.The canoeist transferred their forward momentum to the canoe whichthen went backwards in order to conserve the momentum. (Although, if the canoeist moved very slowly, the force of thewater on the boat would have kept the boat in place,realistically) Originally, the canoeist was 2.5m+1.5m =4m from the shore and that is where they endedup.

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