Question about Sport & Outdoor - Others

26.2 miles in 78 minutes what is the average speed

Find the speed of travel

Posted by Anonymous on

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Posted on Jan 02, 2017

Hi nrbjcs101307,
It seems the answer might be 45 m.

Posted on Oct 29, 2009

SOURCE: a car travels 270 miles

60mph

Posted on Jul 06, 2011

the formula for this is time= speed in mph divided by the distance
example 100 mph divided by 100 miles =1hour
there is no average speed as it will be set by speed restrictions so if the 100 miles was all 50 mph speed zone it would take 2 hours.

Posted on Jun 30, 2014

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How long would it take to get to jupiter

Since the Earth and Jupiter are both revolving around the sun, the distance between them is always changing. The average distance between the Earth and Jupiter is 483 million miles. If you could travel at the speed of light, it would only take you 43 minutes to get to Jupiter. Since people cant travel at the speed of light, you would probably have to take a rocket ship to Jupiter instead- which would take you about 2.2 years if it was going at top speed the whole way. If the California interstate went all the way to Jupiter and you could drive there going 65 mph, it would take you almost 850 years!

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the formula for this is time= speed in mph divided by the distance
example 100 mph divided by 100 miles =1hour
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HOW USE TACHYMETER & WHAT TACHYME3TER MEANS

A Tachymeter helps you estimate the speed you are going.

It uses the basic formula that speed = Distance/time

To use tachymeter, simply start the chronograph or stopwatch when the object measured passing the starting line. When the object reaches the next mile or kilometer marker, stop the chronograph or stopwatch. The point on the tachymeter scale that adjacent to the second hand of the watch indicating the speed (in miles per hour or kilometers per hour) of object traveling between the two points.

For example, we want to measure the average speed of a vehicle is moving. Start the chronometer or stopwatch function when the car passes the starting line, and stop the timer after the vehicle traveled exactly 1 mile or 1 kilometer. Then look at where the chronometer hand (the second hand of the watch) is pointing to, and get the reading or value of the corresponding number at the tachymeter bezel or dial. Let's say the stopwatch stop at 3 o'clock position, meaning 15 seconds had elapsed for the car to travel 1 mile or 1 kilometer. At 3 o'clock position, the tachymetre value shows that number of 240, which means the average speed of the vehicle was 240 mph or km/h.

Source(s):

http://www.mydigitallife.info/2006/12/10...

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A Five cylinder low speed engine has a bore of 29 1/2 inches, a stroke of 63 inches, and a rated speed of 123 rpm what is the average piston speed.

There are two ways to solve this homework problem. If you want full credit, you will solve it using integral calculus as your teacher most likely expects. I am WAY too many years out of engineering school to remember how to do that.
The simple solution takes advantage of the fact that speed is scalar that is presented in units of distance over time, so all you need to know is the total distance traveled over a fixed interval of time.
The stroke is 63 inches and the engine makes 123 complete revolutions in a minute.
123 x 2 x 63 = 15,498 inches per minute average piston speed or 1,291.5 ft/minute
or 14.676 miles per hour
This must be a steam engine.
If your teacher is picky about significant digits, don't forget that the original problem had only two significant digits so the answer you give should have only two significant digits.
When you finish your math homework, your punctuation and capitalization could use some work...

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How to get the average of the velocity if motion is under constant acceleration

Take the example of a racing car as pictured in the animation above. It takes the vehicle 10 minutes(0.17 hours) to travel 23km, from start to finish.

Average speed = 23km / 0.17hrs = 135.29km/hr

Average velocity = 4km / 0.17hrs = 23.53km/hr

The average speed is 135.29km/hr but the velocity is only 23.53km/hr. The reason that velocity is lower, is that it can be positive and negative. Remember this from our earlier discussion on velocity? If not,click to refresh your memory. Since the velocity has negative and positive values some will cancel each other out, hence the lower value. Speed, however, can only be positive.

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A bicycle travels 12 km in 40 min. What is its average speed in km/hr?

18 km/hour

The bike is traveling at the speed of 12/40 = 6/20 =18/60

18 km/60 minutes

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Santa with his son Banta were traveling on a boat after traveling one mile from the starting point the hat of Santa fell down. After 5 minutes Banta told his father about the hat. Santa turned the boat and...

At time 'ZERO', the hat was at distance 'ZERO' from the starting-point.
At time 'T', the hat was at distance 'ONE MILE' from the starting point.
The speed of the boat was the MAXIMUM speed of the boat, MINUS the speed of the current.
At time 'T+5', the hat was being carried by the stream-current toward distance 'ZERO'.
At time 'T+10', the hat was at distance 'ZERO', and the boat was at distance 'ZERO'.
The speed of the boat for the most-recent '10' minutes was the MAXIMUM speed, PLUS the speed of the current.

So, calculate the distance travelled at the 'T+5' time:
DISTANCE = VELOCITY1 multiplied by TIME1.
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where 'VELOCITY1' is the speed travelling AGAINST the current,
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Finish this "homework" assignment on your own.

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What are the numbers on face plate for(likes 60,65,....900,1000)?

The ones associated with the little circles? One dial is for seconds, one for minutes, and one for hours. The seconds one should be applicable for time. The minute and hour, along with the big seconds hand that is centre mounted are for the chronograph function.

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