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:/

30/8

15 meters?

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why not just 1? i mean it's simpler isnt it?

4m/s

so it will be 30/8 seconds?

When the distance is fixed, just find the harmonic mean.

i mean m/s

what does harmonic mean mean again?

For two number a and b the harmonic mean is given by 2ab/(a+b)

Speed = (distance traveled)/(time taken)
Total distance traveled = 0
Speed = 0 m/s

where a and b are...?

the given values?

speed = distance / time
if distance = 1
5 = 1 / 0.2
also
3 = 1 / 0.3333
average speed = 2 / 0.53333

a=5 and b =3 or vice-versa

its 3.75 m/s 4 is wrong

if it's equal " time " u shud use........arithmetic nd equal dist u shud use..........harmonic

this is effective everytime d is equal?

total distance /total time travelled

Yes lgba and when time is equal find the arithmetic mean.

arithmetic mean is..?

2d
-----------
d +d
-- ----
5 3
2d
---------
8d
------
15
2
----
8
------
15

2
----
8
---
15
15
----
4

yeah it is zero

yes,,because disp is 0..

but its speed written in the question???

the first question was average speed

distance adds up*

lol really? at 5m/s ?

what? o.O

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