A 40kg box has an initial velocity of 6 m/s down a 30-degree inclined plane at an initial height of 4 meters. The coefficient of friction between the box and the ground is 0.4.   [a] Calculate the box's velocity when it reaches the bottom of the inclined plane. [b] Calculate the work done by friction. [c] If you increased the angle of the inclined plane, explain how that would affect the work done by friction.   Show Work!!

A 6.00 kg package slides 2.50 m down a long ramp that inclined 20° below [2.) the norizontal. The coefficient of kinetic friction between the package and the ramp is Hk = 0.23. Calculate (a) the work done on the package by friction; (b) the work done on the package by gravity3; (c) the work done on the package by the normal force; (d) the total work done on the package. (e) If the package has a speed 3.00 m/s at the top of the ramp, what is its speed after slidinga.50 m down the ramp?

A worker pushed a 27 kg block 9.0 m along a level floor at constant speed with a force directed 30° below the horizontal. (a) If the coefficient of kinetic friction is 0.24, how much work was done by the worker's force? J (b) What was the increase in thermal energy of the block-floor system?

You slide a box of books of mass 31 kg at constant speed up a 30°ramp, applying a force of 200 N directed up the slope. The coefficient of kinetic friction is 0.18. (a)How much work have you done when the box has risen 1 m vertically? (b)How much work was done by gravity? (c)How much work was done by friction?(d)What was the net work done on the box? Draw Free body diagram as well

Suppose you carry a bag of groceries weighing 145 N from your car to your kitchen, a distance of 35 m, without raising or lowering the bag. What was the work done by the force you exert on the bag?