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Mathematics 22 Online
zarkam21:

Is this correct so far? (Physics)

zarkam21:

Vocaloid:

good

zarkam21:

for the second part to question one the equation would just be f=l/t

Vocaloid:

yes

zarkam21:

and for the second it would be v^2=a/r??

Vocaloid:

take the original equation and multiply both sides by r

Vocaloid:

a = v^2/r multiply both sides by r

zarkam21:

v^2=a*r

Vocaloid:

good now take the square root of both sides

zarkam21:

Vocaloid:

you had it, it's just sqrt(ar)

zarkam21:

so v=sqrt ar

Vocaloid:

also check the units on your acceleration value

zarkam21:

don't I substitute numbers in for velocity or no its just v=sqrt ar

Vocaloid:

that's it

Vocaloid:

they don't give you any numbers for b

zarkam21:

wouldn't we use the same number for A? but instead solve for velocity

Vocaloid:

you are already given the velocity in part a so solving for velocity again would be pointless

zarkam21:

true.

zarkam21:

Thank you

zarkam21:

Vocaloid:

v = sqrt(ar) = ?

zarkam21:

here is a question which has the numbers given

zarkam21:

6.32?

zarkam21:

because 20*2 which is 40 and the sqrt of that is 6.32

Vocaloid:

good, don't forget units

zarkam21:

m/s?

Vocaloid:

good

zarkam21:

for b on question two the velocity question what were the units again

zarkam21:

m/s?

Vocaloid:

yes

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