A 63 kg canoeist stands in the middle of her 22kg canoe. The canoe is 3m long, and the end that is closest to land is 2.5m from the shore. The canoeist now walks toward the shore until she comes to the end of the canoe.
suppose the canoeist is 3.4 m from the shore when she reaches the end of her canoe. What is the canoe's mass?