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Average Speed Formula
How would one write a formula to find the average speed if one knows the distance traveled and the rate of speed for each portion of the trip?
20 miles at m speed 40 miles at n speed |
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Here's a hint: The units for average speed is m/h (miles/hour[or any other unit of time, really]), right? So... get the total miles over the total time. (How? It's your homework :) )
What? You don't know the hours? If I went at a speed of 60 miles/hour for 60 miles, how long did I travel? If you said 1 hour you are right. Use the same logic. Good luck. |
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I don't know the speed nor the time. All I am given is the distance.
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You need to work out total distance divided by total time. You have plenty enough information to do that. You ARE given the speed...
Speed = distance/time will giv eyou the answer. |
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average speed = delta distance divided by delta time
vav = dd / dt ps. D = delta |
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Is the answer for the average speed like this:
3nm/(n + 2m) ? Thanks.  Originally Posted by ljackson30
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60
------ 2m+n Because You know that the formual for average speed? So You can get 20+40 -------- t1+t2 But you don't know t1 and t2 To find time The formula is d/r Now you can substitute 20+40 ------------- 20/m+ 40/n Which is 60/20n+40m |
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Sorry I got a mistake which is the first part Just ignore below this 60 ------ 2m+n |
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ans : if the distances are considered as d1 and d2 and speed as s1 and s2 then average speed =
= (d1 + d2 ) / ( d1 / s1 + d2/s2 ) if d1 = d2 i.e. over same distance then avg speed = 2 S1* S2 / (S1 + S2) |
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100m (Distance) 44 sec (time)=Speed |
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Distance 100m time 44 sec what is the speed |
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100m distance time 44 seconds what is the speed
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average speed = total distance/total time
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You should have created your own thread. Use: |
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average speed=total distance:time
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Hey guys! What if there is 3 distances? For example, Vi = 6miles/no time Vii = 45miles/1hr and Viii = 1.5miles/30mins? Should I say that the time would be 2hrs or 1hr and 30mins? For a total of 90mins? Thanks!
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Originally Posted by Lihim.88
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Hehehe I'm so happy to find they missing formulas... :)
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The formula is
d1+d2 t
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An aircraft travels 2150 nuatical miles in 2 hours 30 minutes. What is the average speed of the aircraft?
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