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Spheres A (0.020 kg)B(0.030 kg) and C (0.050 kg) are approaching the origin as they slide on a frictionless air table (see figure). The initial velocities of A and B are given in the figure. All three spheres arrive at the origin at the same time and stick together. All three then travel at a speed of 0.50 m/s in the +x direction. (a) Find the magnitude and direction (in terms an angle CCW from +x) of the initial velocity of C. (b) Find the change in the kinetic energy of the system in the collision? Answer: (a) 1.77 m/s, +8.44∘; (b) ΔK = −0.092 J

Spheres A (0.020 kg)B(0.030 kg) and C (0.050 kg) are approaching the origin as they slide on a frictionless air table (see figure). The initial velocities of A and B are given in the figure. All three spheres arrive at the origin at the same time and stick together. All three then travel at a speed of 0.50 m/s in the +x direction. (a) Find the magnitude and direction (in terms an angle CCW from +x) of the initial velocity of C. (b) Find the change in the kinetic energy of the system in the collision? Answer: (a) 1.77 m/s, +8.44∘; (b) ΔK = −0.092 J

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  1. (yf08-073) Spheres A ( 0.020 k g ) B ( 0.030 k g ) and C ( 0.050 k g ) are approaching the origin as they slide on a frictionless air table (see figure). The initial velocities of A and B are given in the figure. All three spheres arrive at the origin at the same time and stick together. All three then travel at a speed of 0.50 m / s in the + x direction. (a) Find the magnitude and direction (in terms an angle C C W from + x ) of the initial velocity of C . (b) Find the change in the kinetic energy of the system in the collision? Answer: (a) 1.77 m / s , + 8.44 ∘ ; (b) Δ K = − 0.092 J

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