A floating ice block is pushed through a displacement d=(15m)i-(12m)j along a straight embankment by rushing water, which exerts a force F=(210N)i-(150N)j on the block. How much work does theforce do on the block during the displacement?
Solution
We find the work done by the water on the ice block:
=(210 N)(15 m)+(-150 N)(-12 m)