Question

ARMY pls check out my previous question and tell me how did 5/18 got ????

the answer is correct but I didn't got the way so can anyone explain it ????

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Answer 1

Behna

he did not got 5/18 from anywhere ..

actually what we do is that

to convert a velocity/speed from km/hr. to m/sec.

we just multiply the value we got in km/hr. with 5/18 so that we can just get it in terms of m/sec.

if you are still getting confused then ask me .

I'll explain you again ☺️

Answer 2

Hi army!!!!

Well,it's too simple

Lemme explain,

To solve the question we need to make the units same......

Acc to question,

u=20 km/h

v=50 km/h

T= 10 sec

Time being in seconds.....we need to convert initial and final velocity in m/s......

so,

$u = 20 \: km \: per \: hr = 20 \times \frac{5}{18} = 5.5 \: meter \: er \: sec \\ \\ similarly \: v = 50 \: km \: per \: hr = 50 \times \frac{5}{18} = 13.88 \: meter \: per \: sec$

$bts (◍•ᴗ•◍)❤ exo \\ missing \: u \: army \:$(ᗒᗩᗕ)