Two blocks are sliding on a horizontal frictionless surface with velocities show

Question

Two blocks are sliding on a horizontal frictionless surface with velocities shown in the sketch. Block A has mass 0.500 kg and block B has mass 0.450 kg. The two blocks have a perfectly inelastic collision and stick together after the collision.

(a) What is the speed of the combined blocks after the collision?
m/s

(b) What angle does the velocity of the combined blocks make with the +x-axis after the collision?
? counterclockwise from the +x-axis

(c) What is the magnitude of the decrease in kinetic energy of the system of two blocks due to the collision?
J

Two blocks are sliding on a horizontal frictionless surface with velocities shown in the sketch. Block A has mass 0.500 kg and block B has mass 0.450 kg. The two blocks have a perfectly inelastic collision and stick together after the collision. (a) What is the speed of the combined blocks after the collision? m/s (b) What angle does the velocity of the combined blocks make with the +x-axis after the collision? counterclockwise from the +x-axis (c) What is the magnitude of the decrease in kinetic energy of the system of two blocks due to the collision? J

Explanation / Answer

http://tinypic.com/view.php?pic=19o3ea&s=8#.VPiGe_mUe54

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