The two boats are steadily moving towards each other in parallel courses along the lake.

| June 25, 2021 | education

The two boats are steadily moving towards each other in parallel courses along the lake. When they are level, the load is carefully lowered from the first boat into the second. Has the speed of the first boat changed?

Let the first boat move under the action of some force F. Since, according to the condition of the problem, this boat moves rectilinearly and uniformly, then according to Newton’s first law:

F – Fc = 0, where Fc is the water resistance force.

So only from the first boat a load of mass m was shifted, then the mass of the boat itself decreased, due to which the water resistance also decreased. Taking into account that the force F remained unchanged, it means:

F – Fс> 0, that is, the boat will move with some acceleration and, accordingly, higher speed.

Therefore, the correct answer is that the speed of the boat will increase.



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