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A ball with a mass of 0.620kg is initially at rest. It is struck by a second ball having a mass of 0.405kg , initially moving with a velocity of 0.260m/s toward the right along the x axis. After the collision, the 0.405kg ball has a velocity of 0.210m/s at an angle of 35.9%u2218 above the x axis in the first quadrant. Both balls move on a frictionless, horizontal surface.
What is the magnitude of the velocity of the 0.620kg ball after the collision?
What is the direction of the velocity of the 0.620kg ball after the collision?
What is the change in the total kinetic energy of the two balls as a result of the collision?
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A high-speed flywheel in a motor is spinning at 450 when a power failure suddenly occurs. The flywheel has mass 38.0 and diameter 78 . The power is off for 25 and during this time the flywheel slows due to friction in its axle bearings.
Julie throws a ball to her friend Sarah. The ball leaves Julie's hand a distance 1.5 meters above the ground with an initial speed of 13.0 m/s at an angle 52.0 degrees; with respect to the horizontal. Sarah catches the ball 1.5 meters above the gr..
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