Two motor boats departed from one pier simultaneously in opposite directions. One boat was sailing at a speed of 250

| February 11, 2021 | education

Two motor boats departed from one pier simultaneously in opposite directions. One boat was sailing at a speed of 250 m / min, and the other at 200 m / min. How many kilometers will there be between them in 1 hour?

Let’s convert the speed from m / min to km / h.

V1 = 250 m / min = 250 * 60/1000 = 15 km / h.

V2 = 200 m / min = 200 * 60/100 = 12 km / h.

Determine the speed of removal of motor boats.

V = V1 + V1 = 15 + 12 = 27 km / h.

Let’s determine what the distance will be between the boats in 1 hour.

S = V * 1 = 27 * 1 = 27 km.

Answer: The distance will be 27 km.

Inverse problem.

Two motor boats departed from one pier simultaneously in opposite directions. In one hour, the distance between them was 27 km. Determine the speed of the second boat if the speed of the first boat is 250 m / min.

Let’s determine what distance the first boat will cover in 1 hour (60 minutes).

S1 = V1 * t = 250 * 60 = 15000 m.

Let’s determine what distance the second boat will cover in 1 hour.

S2 = S – S1 = 27000 – 15000 = 12000 m.

Let’s determine the speed of the second boat.

V2 = S2 / t = 12000/60 = 200 m / min.

Answer: The speed of the second boat is 200 m / min.



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