Question

Help anyone? -_-
Part A: Explain why we do not measure the speed at which a car travels in cm per second? In your explanation, use reasoning based on appropriate units to model this situation. (5 points)

Part B: What are the two quantities that should be measured to find the speed at which a car travels? Explain how the rate can be determined. (5 points)

Answer 1

compare how fast a car can go with the size of a centimeter and describe if its a good idea to use it or not

Answer 2

and there is a good formula to determine speed; distance traveled, divided by the time it took to travel it

Answer 3

It doesn't make sense to me.. that's why I asked it on here...

Answer 4

when you ask a question on here, you will receive guidance and concepts that you can use to develop solutions with .... not just answers given to you.

Answer 5

I didn't say anyone was gonna just come out and give me answers, but I don't know any formula in other words to solve for it.

Answer 6

how would you describe the length of a centimeter; is it tiny or big?

Answer 7

tiny

Answer 8

and how would you describe the distances a car can travel; tiny or big?

Answer 9

big

Answer 10

since it takes a lot of tiny things to add up to something big; we would not want to measure the speed or distances traveled by a car with centimeters.

Answer 11

something bigger; like kilometers or miles is more appropriate

Answer 12

ok can i ask another question .. it doesn't have anything to do with this question tho i've been stuck on an exam for almost an hour

Answer 13

im not comfortable with exam questions ... but ask it and ill see how appropriate it is :)

Answer 14

Jane poured 12 cups of water into a rectangular container measuring 12 inches by 8 inches by 9 centimeters.

[1 cup = 14.44 cubic inches; 1 inch = 2.54 cm]

Part A: What is the maximum volume of water that the rectangular container can hold? Show your work. (3 points)

Part B: How many cubic inches of water was poured into the container? (3 points)

Part C: What was the height of the water in the container? Show your work. (4 points)

Answer 15

you dont have to help with all of them

Answer 16

you would want to have all the measurements defined by the same unit. What unit would you say is most appropriate for this?

Answer 17

cups

Answer 18

hmm, if it were me (and since part B asks for inches to begin with) id consider converting them to inches

Answer 19

For part b couldn't you just multiply 14.44 by 12? since 1 cup is equaled to cubic inches

Answer 20

correct

Answer 21

for A, that 9 cm needs some changing as well

Answer 22

to inches?

Answer 23

of course :)

Answer 24

ok for c for I don't understand how would you find the height of the water inthe container..

Answer 25

the base of the container doesnt change, all you would have to do is solve for height:

how do you find the volume of the rectangular container?

Answer 26

l x w x h?

Answer 27

yes; V = lwh, therefore dividing both sides by lw defines h for us

Answer 28

A, convert 9cm to inches
B, 12 cups to, cubic inches
C, use the volume in B to define h

Answer 29

ok thanks!

Answer 30

im thinking the 9cm was spose to be the height to start with .... but they really didnt label them for you to determine that.

good luck :)