- #1

- 5

- 0

**Which one of the quantities below has dimensions equal to ML/T**

^{2}a) mv

b) mv

^{2}

c) mv

^{2}/r

d) mrv

e) mrv

^{2}/r

^{2}

I tried splitting it up in M*(L/T)*1/T

which would lead me to mv*T

^{-1}and then I get stuck

Please help!

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- Thread starter budd99
- Start date

- #1

- 5

- 0

a) mv

b) mv

c) mv

d) mrv

e) mrv

I tried splitting it up in M*(L/T)*1/T

which would lead me to mv*T

Please help!

- #2

- 12,133

- 160

Since it's multiple choice, how about examining each answer and seeing if it matches ML/T

For example:

a) mv = M L/T (is not ML/T

etc.

- #3

- 5

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Since it's multiple choice, how about examining each answer and seeing if it matches ML/T^{2}

For example:

a) mv = M L/T (is not ML/T^{2})

etc.

I'm working on it, but what is the r in the answers? Also, why does the m become a capital M?

- #4

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- 160

- #5

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I took mv

(M(L/T)(L/T))/r

I assumed r = L since both are length measures so...

(M(LL/TT))/L

(M(LL/TTL)

M(L/TT)

M(L/T

I don't know if I should be equating r to L though...

- #6

- 12,133

- 160

That's correct. Yes, *r* has dimensions of Length, so use L for its dimension.

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