- #1

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how long would it take a plane, traveling at an average speed of 634km/h, to cover a distance of 3912 km?

Determine the mass in grams of a hamburger that weighs 8.0 oz.

thanks!

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- Thread starter starsun
- Start date

- #1

- 6

- 0

how long would it take a plane, traveling at an average speed of 634km/h, to cover a distance of 3912 km?

Determine the mass in grams of a hamburger that weighs 8.0 oz.

thanks!

- #2

- 399

- 1

You should know that Time = Distance/Speed.

You should also know that 1 oz. = 28.35 g.

- #3

BobG

Science Advisor

Homework Helper

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Yes, speed = distance/time ..... or you can rearrange the equation to find either of the other two missing variables.

You should have a chart (either in one of the appendices or on a handout) that shows conversions from metric to english or english to metric. You use the dimensional analysis to eventually arrive at the proper units.

For example: to go from meters/second to miles/hour you have to multiply by (1 mile/1609 meters) and by (3600 seconds/1 hour).

The conversion can be flipped either way (1609 meters/1 mile) since the numerator and denominator are equivalent (1609 meters = 1 mile). You choose which way to flip it depending upon which unit you want to cancel out.

- #4

Gokul43201

Staff Emeritus

Science Advisor

Gold Member

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Out of curiosity starsun, which grade is this for/are you in ?

- #5

chem_tr

Science Advisor

Gold Member

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Regards, chem_tr

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