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Home Q & A Board Science-Related Homework Help Chemistry (Moderator: Laser_3)
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beardy beardy
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10 years ago







Speed is goven to us as m/s. How fast are you going if you are travelling at 70 mph? (1 mile = 1.609 km)

70mi | 1.609 km | 10^3 m | 1 hr  |  1 min
------    --------------   ---------    -------   -------
 hr     |       1 mi   |   1 km  60 min|  60 sec

= (70 x 1.609 x 10^3) / 3600

= 112.63 x 10^3/ 3600

= .031286 x 10^3 m/s

= 31.286 m/s

Is this right? And because the question only had one significant figure, should my answer be 1 SF as well?

= 3 x 10^1 m/s
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bio_manbio_man
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#1
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10 years ago
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beardy Author
wrote...
#2
10 years ago
I appreciate the input. I already have the answer, I'm just looking for how many significant figures to use.
Hi
wrote...
#3
Educator
10 years ago
Oh, in that case it's correct.
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