Question

Express the speed limit of 65 miles/hour in terms
m/s

Answer 1

\(\large\color{black}{ \displaystyle 65{\rm miles}{~/~}1{\rm hour} }\)

Answer 2

convert hours to seconds.

1 hour = 60 minutes
1 minute = 60 seconds

Therefore:
1 hour = 360 seconds

Answer 3

\(\large\color{black}{ \displaystyle 65{\rm miles}{~/~}360{\rm seconds} }\)

Answer 4

then convert miles to meters.

Answer 5

wouldnt it be 3600?

Answer 6

1 mile = 1609.34 meters

Answer 7

m/s means meters per second right?

Answer 8

1609.34 × 65 = 104609.1

\(\large\color{black}{ \displaystyle 104609.1~{\rm miles}{~/~}360{\rm seconds} }\)

Answer 9

divide top and bottom by 360, and you get?

Answer 10

no i mean. 1 hour = 3600 seconds right?

1*60*60

Answer 11

oh, true, my bad.

Answer 12

\(\large\color{black}{ \displaystyle 104607.1~{\rm miles}{~/~}3600{\rm seconds} }\)

then divide by 3600 on top and bottom

Answer 13

http://www.wolframalpha.com/input/?i=%281609.34%C3%9765%29%2F3600

\(\large\color{black}{ \displaystyle 29.057527777777...~{\rm miles}{~/~}{\rm seconds} }\)

Answer 14

I am not understanding

Answer 15

\(\large\color{black}{ \displaystyle 29.1{\rm m}{/}{\rm s} }\)

Answer 16

I have this:
\(\large\color{black}{ \displaystyle 104607.1~{\rm miles}{~/~}3600{\rm seconds} }\)

then I am dividing by 3600 on top and bottom
so that I get meters per seconds.

Answer 17

and this is what I got:
\(\large\color{black}{ \displaystyle 29.1{\rm m}{/}{\rm s} }\)

Answer 18

could you show me the whole process that you are doing, please ?

Answer 19

\[65 *\frac{ miles }{ hour } = 65 * \frac{ 1609.34 meters }{ 3600 seconds }\]

Answer 20

is it?

Answer 21

@freckles

@SolomonZelman

@amistre64

Answer 22

29.0575277778

Answer 23

ohh i see now

Answer 24

Thanks a lot !