E3. A block of mass 1.00 kg sits on an inclined plane as shown. (Figure 1)A...

E3. A block of mass 1.00 kg sits on an inclined plane as shown. (Figure 1)A force of magnitude 50.0 N is pulling the block up the incline. The coefficient of kinetic friction between the plane and the block is 0.500. The inclined plane makes an angle 10.0 degrees with the horizontal.

What is the total work Wfric done on the block by the force of friction as the block moves a distance 6.00 mm down the incline?

E12. On a frictionless horizontal air table, puck A (with mass 0.254 kg ) is moving toward puck B (with mass 0.366 kg), which is initially at rest. After the collision, puck A has velocity 0.119 m/s to the left, and puck B has velocity 0.654 m/s to the right.

a. What was the speed vi of puck A before the collision?

b. Calculate ΔK, the change in the total kinetic energy of the system that occurs during the collision.

Express all your answer numerically, in Joules.

Solutions

Expert Solution

genius_generous answered 1 year ago

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