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_buddha
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Homework Statement
A 2.0 kg object moving along the x-axis at 3.0 m/s strikes a 1.0 kg object initially at rest. Immediately after the collision, the 2.0 kg object has a velocity of 1.5 m/s directed 30 degree from its initial direction of motion. What is the x-component of the veolcity of the 1.0 kg object just after the collision?
Homework Equations
pi = pf
The Attempt at a Solution
m1v1i + 0 = m1v1f + m2v2f
2(3) = 2(1.5cos30) + (1)vf
vf = 2.4 m/s
thats what i get, but the answer is 3.4 m/s. What am i doing wrong here?