Physics Help, Please?! 10 Points Promised! 1-19?

[girl next door]

A body has a velocity of 72km/hr. Find its value in m/s.

a) 1.2 m/s
b) 20 m/s
c) 259.2 m/s
d) 1200 m/s

Thanks so much!

 

[Derek]

Haha. School's been out for two weeks(summer vacation) and already I don't know if m/s stands for miles per second or meters per second.
If it's meters per second, it's 20
If it's miles per second, it's 0.0124277777777777
I'm gonna guess that it's meters per second, since the second one's not an option. So, the answer is 20.

I hope you get your 10 points, and good luck!

 

[Daniel]

Okay one dumb**** question about the definition of displacement immediately followed with this laziness means you are cut off in my book. Do your own homework/test. You'll thank yourself for it later.

 

[somethingoffbeat]

its b
20m/s
To convert from km/h to m/s , is by multiplying it by1000/(60*60).Since 1km=1000m and 1hr=60*60 secs
Therefore, The solution for ur problem is,
(72*1000)/(60*60)=20m/s

 

[kiki]

20 m/s - 72 times 1000 divided by 3600

 

[rudy gay]

B
when U want to find the value in m/s U should divide Ur velocity on 3.6 then u will have the value in m/s.
good luck