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Answer on Mechanics | Relativity Question for Cake

Question #65175
Block A of mass4.0 kg is on a horizontal frictionless tabletop and is placed against a spring of negligible mass and spring constant 650 Nm. The other end of the spring is attached to a wall. The block is pushed toward the wall until the spring has been compressed a distance x, as shown above. Block A is released, then strikes and sticks to Block B at the edge of the table. The blocks then fall to the ground following the trajectory shown, falling 0.80 m vertically to the floor. Air resistance is negligible.

5. The spring has 3.25 J of elastic potential energy when it is compressed distance x. Determine the distance x.

6. Determine the velocity of Block A on the table when it leaves contact with the spring.

7. Determine the velocity of the stuck together blocks immediately following the collision.

8. What is the total kinetic energy of the blocks just before they hit the floor?

Please show work if possible! Thank you!
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