- #1
emily081715
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- 4
Homework Statement
Two solid spheres hung by thin threads from a horizontal support (Figure 1) are initially in contact with each other. Sphere 1 has inertia m1 = 0.040 kg , and sphere 2 has inertia m2 = 0.10 kg. When pulled to the left and released, sphere 1 collides elastically with sphere 2. At the instant just before the collision takes place, sphere 1 has kinetic energy K1 = 0.098 J .What is the speed of sphere 1 after the collision?
Homework Equations
k=1/2mv^2
p=mv
The Attempt at a Solution
i used the kinetic energy and tried to solve for v. v=√0.098/(0.5)(0.04). i got an answer of 2.2m/s which is incorrect