0
What was the average speed in km of a boat that moves 15.0 km across a lake in 45min?
Wiki User
∙ 11y ago
Speed is distance/time. If you want to express the speed in km/h then convert time to hours: 45 min / (60 min/hour) = 0.75 hour. Then you have (15.0 km)/(0.75 h) = 20 km/h
Wiki User
∙ 11y ago
Add your answer:
Earn +20 pts
What was the average speed of a boat that moves 15.0 km across a lake in 30minutes in kilometers per hour?
30 k/h
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
A car moves 90 km in 45 minutes What was the average speed in kilometers per hour?
Its speed is 120 kilometers per hour.
When average velocity and average speed is equal?
For the instantaneous value of average velocity, average speed and average velocity are equal.
When an object moves into 5 second zone you must modify your speed?
No, not if you are walking!
What is the average speed 3hour's 45min's to travel 180 miles?
speed = distance / time. In travelling over a distance, the speed may vary. The average speed is the constant speed that covers the given distance in the given time. First convert the time to hours and fractions of hours: 45min = 45/60 hrs = 0.75hrs 3hr 45min = 3.75hrs Now divide: average speed = 180 / 3.75 = 48 mph.
What was the average speed of a boat that moves 15.0 km across a lake in 30minutes in kilometers per hour?
30 k/h
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
How fast does a average hurricane moves?
The average forward speed of a hurricane is 10-15 mph
What is the average forward speed for a tornado?
The average tornado moves at about 30 miles per hour.
Can the average velocity of a car and average speed be the same?
Yes, if the car moves in only one direction.
Average velocity of a particle is zero but not its average speed .. is it possible?
Yes - for example, if an object moves in a circle.
What is the overall rate of speed an object moves?
speedIn physics:If the direction doesn't matter, the word "speed" is used.If the direction DOES matter, the word "velocity" is used.
What is the average speed of energy?
There is no single answer. Electromagnetic energy moves at the speed of light, about 300,000 km/sec. Acoustic energy moves at the speed of sound in whatever medium you are using. Kinetic energy moves with the speed of the moving body. Thermal energy moves through a conducting body at various speeds, depending on how well the material conducts heat. So energy as a general term does not have a specific speed.
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.
The rate at which an object moves is called?
Velocity
Why is average speed called average speed?
Average speed is called average speed because it represents an average speed of something over a distance. Avarage could be thought of as a way to "even out" speed over a distance to see how fast an object was moving across that distance if it moved at a constant speed.An average speed takes into account stops and restarts as well as changes in speed of an object over the distance under consideration. The moving object might be moving faster at some points and slower at others. The object might stop and then resume traveling. All these things are "evened out" by average speed.A car taking a group to an eatery across town will start and stop as well as change speed across the distance. By dividing the distance by the travel time, we get the average speed that a car moving at a constant velocity would travel at to make the trip.
