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Posted by **Em** on Tuesday, February 8, 2011 at 11:19pm.

a) What is the original speed of the first car?

b)What is the original speed of the second car?

- Physics -
**drwls**, Wednesday, February 9, 2011 at 12:50amM1 = 2M2

M1*V1^2 = (1/2)M2*V2^2 = (M1/4)V2^2

V2 = 2 V1

M1*(V1+3.41)^2 = M2*(V2+3.41)^2

= (M1/2)*(2V1 +3.41)^2

Cancel the M1's and solve this quadratic equation for V1:

(V1 +3.41)^2 = (1/2)(2V1 + 3.41)^2

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