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What is the speed in kilometers per hour of a boat that travels 87 km in 3 hours?
Wiki User
∙ 9y ago
29 km per hour.
Wiki User
∙ 9y ago
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If a boat travels upstream against a 3 mph current and travels 5 hours and the return trip takes 2.5 hours what is the speed of the boat?
Suppose the speed of the boat is x mph. Then upstream, it travels 5 hours at x-3 mph and so covers 5x - 15 miles. When going downstream the boat covers the same distance, at x+3 mph, in 2.5 hours so (5x-15)/(x+3) = 2.5 Multiply through by 2*(x+3): 2*(5x-15) = 5*(x+3) 10x - 30 = 5x + 15 or 5x = 45 giving x = 9 mph.
A boat moves 15 km in 45 minutes What was the average speed in kilometers per hour?
The average speed of boat in kilometers is per hour is 20 km /hr.
A fisherman travels downstream at full speed to his favorite fishing spot The stream is running at a rate of 5 miles per hour, and the trip takes 2 hours to get to the fishing hole He is surprised,?
A fisherman travels downstream at full speed to his favorite fishing spot. The stream is running at a rate of 5 miles per hour, and the trip takes 2 hours to get to the fishing hole. He is surprised, however, to find that the trip takes 6 hours at full speed to get back to the dock when he is finished. How fast will his fishing boat go? the boat is going 30 mph.
What is the average speed of a boat if it travels 16 miles due north in 2 hours and 24 miles due west in 2 hours?
10 miles per hour speed is not a vector quantity, therefore direction does not matter. 16 miles/ 2 hours=8 mph 24 miles/ 2 hours=12 mph (8+12)/2=10 mph average
A boat can travel 24 miles downstream in 2 hours and can make the return trip in 3 hours so what is the speed of the boat in still water and the speed of the current?
Whilst travelling downstream the boat travels at V + C mph where V is the speed of the boat in still water and C is the speed of the current. Whilst travelling upstream the speed is V - C mph. The downstream velocity = 24/2 = 12mph = V + C therefore C = 12 - V Velocity (speed) = Distance ÷ Time : therefore Distance = Velocity x Time. As the distance in either direction is the same then, 2(V+C) = 3(V-C) 2V + 2C = 3V - 3C V = 5C : substituting for C as C = 12-V V = 5(12 - V) = 60 - 5V 6V = 60 : V = 10 mph. Therefore, C = 12 - 10 = 2 mph The speed of the boat in still water is 10 mph and the speed of the current is 2 mph.
A boat travels 88 kilometers in 1 hours how much time will it takes traveling 440 kilometers?
5hours
The Hudson River flows at a rate of 5 miles per hour A patrol boat travels 40 miles upriver and returns in a total time of 6 hours What is the speed of the boat in still waters?
15 MPH. On the way up the river subtracts from the speed of the boat so the time is 40/10 or 4 hours. On the way back the river adds to the speed of the boat so the time is 40/20 or 2 hours. The total time is 6 hours.
A car travels 18 meters in 3.2 seconds.what is the average of the boat?
Information about the speed of the car provides no information whatsoever about the speed of a boat!
What is the average speed in kilometers per hour of a boat that moves 15 kilometers across a lake in 45 minutes?
45 minutes in ¾ of an hour, so just divide 15 kilometers by ¾ hours and get 20 kilometers per hour.
A boat moves 15 km in 45 minutes What was the average speed in kilometers per hour?
The average speed of boat in kilometers is per hour is 20 km /hr.
If a boat travels upstream against a 3 mph current and travels 5 hours and the return trip takes 2.5 hours what is the speed of the boat?
Suppose the speed of the boat is x mph. Then upstream, it travels 5 hours at x-3 mph and so covers 5x - 15 miles. When going downstream the boat covers the same distance, at x+3 mph, in 2.5 hours so (5x-15)/(x+3) = 2.5 Multiply through by 2*(x+3): 2*(5x-15) = 5*(x+3) 10x - 30 = 5x + 15 or 5x = 45 giving x = 9 mph.
What is the average speed if thev boat travels 15 min?
The average speed is(4 x the number of nautical miles the boat traveled in that time) knots.
A boat moves 15.0 kilometers across a lake in 30 minutes. What is the average speed of the boat in kilometers per hour?
30 km/h
What is the speed of a boat that travels 10 miles in 30 minutes?
The speed of a boat that travels 10 miles in 30 minutes is 1/3 miles per minute.Formulas=d/ts=10/30s=1/3 mile per minute
A fisherman travels downstream at full speed to his favorite fishing spot The stream is running at a rate of 5 miles per hour, and the trip takes 2 hours to get to the fishing hole He is surprised,?
A fisherman travels downstream at full speed to his favorite fishing spot. The stream is running at a rate of 5 miles per hour, and the trip takes 2 hours to get to the fishing hole. He is surprised, however, to find that the trip takes 6 hours at full speed to get back to the dock when he is finished. How fast will his fishing boat go? the boat is going 30 mph.
What is the average speed of a boat if it travels 5580 miles in 62 days?
5580+1/3
A boat is traveling at a constant speed In 10 hours the boat travels 190 miles How many hours will it take the boat to travel 28.5 miles?
distance = rate * time 190 miles = rate * 10 hrs r=190 miles/10 hrs = 19 mph 28.5 miles = 19 mph * t t=28.5miles/19 mph=1.5 hours
