I'm not sure if I have these concepts correct for lab...(adsbygoogle = window.adsbygoogle || []).push({});

Two objects of different mass start from rest, are pulled by the same magnitude net force, and are moved through the same distance. The work done on object 1 is 500J. After the force has pulled each object, object 1 moves twice as fast as object 2.

a) How much work is done on object 2?

W1 = F1D1 = 500J thus

W2 = F1D1 =500J

b) What is the kinetic energy of object 1 after being pulled?

Wnet = ∆K = .5mv^2 – 0 =500J

c) What is the kinetic energy of object 2 after being pulled?

Wnet = ∆K = .5mv^2 – 0 =500J

d) What is the ratio of the mass of object 1 to the mass of object 2?

Ob1: ∆K = .5m(2v)^2 = 4(.5mv^2)

Ob2: ∆K = .5m(1)^2 so...

1:4

Did I do this correctly? It seemed too easy...

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# Homework Help: What is the kinetic energy of object 1 after being pulled?

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