Question

Conversion: 72000 cm/hr^2 = ? m/s^2

Conversion: 500 km/minute = ? m/s

Answer 1

\[72000 \frac{ cm }{ hr^2 } * \frac{ 1m }{ 100cm } * (\frac{ 1 hr }{ 3600s })^2 = ??\]

Answer 2

Does that make sense to you?

Answer 3

\[72000 \frac{\cancel{cm} }{ \cancel{hr^2} } * \frac{ 1 m }{ 100 \cancel{cm} } * (\frac{ 1\cancel{ hr} }{ 3600s })^2 = ??\]

Answer 4

Look at the units how they all cancel each other nicely. That is how you can do all unit conversion problems!

Answer 5

@Sda370

Answer 6

\[500 \frac{ km }{ \min } * \frac{ 1000 m }{ 1 km } * \frac{ 1 \min }{ 60s } = ??\]

Answer 7

Thank you, this was the way I learned it but didn't understand how to use it on these problems. You just won yourself a medal! =D

Answer 8

do you understand it now?

Answer 9

Still writing it down, so the hour crosses out with the hour squared?

Answer 10

all your units should cancel except the ones you want left over, in this case m/s^2

Answer 11

For the first question, is the answer 0.2 seconds squared?

Answer 12

And the second, 8333.3m/s?

Answer 13

\[0.200 \frac{ m }{ s^2 }\]

Answer 14

\[8.33 * 10^3 m/s\]