Year 12s: what will be the first way you research your future options? >>

question

a small mouse is twice shorter than a long mouse.

(a) if the long mouse weighs 17 grams, work out the mass of the long mouse.

(b) john says that " the small mouse must be twice as lighter than the long mouse"
explain why john is wrong.

for part a i said that

let long mouse = X therfore small mouse must = X/2
then 17/2 =8.5 therefore small mouse must =8.5 grams :s-smilie:

any one have any views or any answers thanks in advance

Reply 1

Mr M

Study Forum Helper

"twice shorter"???

I think you will find that mass is proportional to volume not length.

Reply 2

Alpha.Centauri

lol Mr m i agree but this is a question my cuz copies down from class the teacher gave

Reply 3

Alpha.Centauri

what would your answer be

Reply 4

Mr M

Study Forum Helper

"Twice shorter" is meaningless but assuming the length of the small mouse is half that of the large mouse then its volume would be reduced by a scale factor of 8. You will need to assume both mice have the same density to work out the answer (perhaps they are chocolate mice?).