Question

I have a couple of questions that i need help with? I think I might know the answer, but not sure.

Answer 1

post one question at a time please

Answer 2

it's no good posting them all at once because it's better to go over things one problem at a time, one step at a time

Answer 3

Question 1, i think it might be 2.25, but not sure.

Answer 4

question 1

notice how the y values start at 0, then go to 15 and then back to 0 (for x = 0 through x = 1.5)

Answer 5

yeah the height

Answer 6

is that my answer? 15 seconds

Answer 7

1.5 seconds

Answer 8

Question 2, would it be the same thing as question 1?

Answer 9

5 seconds?

Answer 10

at x = 0 the value of y is about -5 or so

when x = 1, what is the value of y?

Answer 11

y=5

Answer 12

is that right?

Answer 13

yes then notice how when x = 2 we're back at y = -5 again

Answer 14

A full cycle would be going from one y value and then come back to that same y value

In this case, start at -5 go up and then come back down to -5

Answer 15

A full cycle is from x = 0 to x = 2

half of that cycle is from x = 0 to x = 1

Answer 16

so it would be 10

Answer 17

what percent of the cycle is completed in 1 second?

Answer 18

it's not 10%

Answer 19

50%?

Answer 20

50% yes since it's half the cycle

Answer 21

Question 3, it says the degrees, would that be 12 since thats how far it goes up to?

Answer 22

where does y start off?

Answer 23

0

Answer 24

ok so it must get back to 0 to complete a full cycle

Answer 25

how long is a full cycle?

Answer 26

1.5

Answer 27

so we have a full cycle being 1.5 seconds

a full cycle in this case means the wheel turns 360 degrees

Answer 28

(360 degrees)/(1.5 seconds) = 360/1.5 = 240 degrees per second

Answer 29

put another way, after 1 second, the wheel has turned 240 degrees