A disc is rotating at constant angular acceleration of 2 rad/s^2. At t=0, the angular velocity = -5 rad/s. When does the disc momentarily go to rest? * a. 5 s b. 6 s c. 2 s d. 1 s e. 2.5 s f. 1.5 s g. 0.5 s h. 0.33 s i. 0.4 s Given m1 = 2 kg, x1 = 11 m, m2 = 4 kg, x2 = -1 m. Find the center of mass of this system of two particles * a. 36 m b. 2 m c. 7 m d. 6 m e. 3 m Particle 1 of mass 3 kg moves to the right at speed 5 m/s towards Particle 2 of mass 3 kg which is moving to the left at 1 m/s. After the collision Particle 1 moves to the right with speed 1 m/s. What is the speed of Particle 2 after the collision? * a. 5 m/s b. 2 m/s c. 1 m/s d. 4 m/s e. 3 m/s

A disc is rotating at constant angular acceleration of 2 rad/s^2. At t=0, the angular velocity = -5 rad/s. When does the disc momentarily go to rest? * a. 5 s b. 6 s c. 2 s d. 1 s e. 2.5 s f. 1.5 s g. 0.5 s h. 0.33 s i. 0.4 s Given m1 = 2 kg, x1 = 11 m, m2 = 4 kg, x2 = -1 m. Find the center of mass of this system of two particles * a. 36 m b. 2 m c. 7 m d. 6 m e. 3 m Particle 1 of mass 3 kg moves to the right at speed 5 m/s towards Particle 2 of mass 3 kg which is moving to the left at 1 m/s. After the collision Particle 1 moves to the right with speed 1 m/s. What is the speed of Particle 2 after the collision? * a. 5 m/s b. 2 m/s c. 1 m/s d. 4 m/s e. 3 m/s