A curling stone with a mass of 7 kg moves across the ice at, Ask an Expert

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A curling stone with a mass of 7 kg moves across the ice at a speed of 1.35 m/s in the positive x direction. It collides with another curling stone with the same mass. After the collision stone 1 has a speed of .457 m/s at an angle of 54 degrees to the left of the x axis.

a) What is the initial kinetic energy?

b) What is the initial momentum (magnitude and direction)?

c) What is the speed and direction of stone 2 after the collision?

d) What is the total momentum perpendicular to the x axis after the collision?

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