In the figure, a block slides down an incline. As it moves from point A to point B, which are 4.0 m apart, force F→ acts on the block, with magnitude 3.6 N and directed down the incline. The magnitude of the frictional force acting on the block is 14 N. If the kinetic energy of the block increases by 43 J between A and B, how much work is done on the block by the gravitational force as the block moves from A to B?

A 325 N force is pulling on an 85.0 kg refrigerator as it slides across a horizontal floor. The force acts at an angle of 25.0° above the horizontal surface of the floor. The coefficient of kinetic friction between the refrigerator and the floor is 0.150, and the refrigerator moves a distance of 5.50 m. Find (a) the work done by the pulling force, (b) the work done by the force of kinetic friction, (c) the net amount of work done on the refrigerator, and (d) if the refrigerator was initially at rest determine the speed of the refrigerator after the 5.50m displacement. (e) Include a force (or free-body) diagram of the situation. ]

In the figure, a horizontal force Fa of magnitude 18.0 N is applied to a 3.06 kg book as the book slides a distance d = 0.32 m up a frictionless ramp at angle 0 = 30°. (a) During the displacement, what is the net work done on the book by F, the gravitational force on the book, and the normal force on the book? (b) If the book has zero kinetic energy at the start of the displacement, what is its speed at the end of the displacement? (a) Number (b) Number Psychology i DF₂ Units Units

Starting from rest, a 5.50-kg block slides 2.30 m down a rough 30.0° incline. The coefficient of kinetic friction between the block and the incline is k (a) Determine the work done by the force of gravity. J (b) Determine the work done by the friction force between block and incline. J (c) Determine the work done by the normal force. (d) Qualitatively, how would the answers change if a shorter ramp at a steeper angle were used to span the same vertical height? 0.436.

A coin slides over a frictionless plane and across an xy coordinate system from the origin to a point with xy coordinates (3.70 m, 4.78 m) while a constant force acts on it. The force has magnitude 2.08 N and is directed at a counterclockwise angle of 100° from the positive direction of the x axis. How much work is done by the force on the coin during the displacement?

A force F→ is applied to a 2.0 kg, radio-controlled model car parallel to the x-axis as it moves along a straight track. Calculate the work done by the force F→ when the car moves from x = 0 to x = 3.0 m. Calculate the work done by the force F→ when the car moves from x = 4.0 m to x = 7.0 m.

A worker pushes a wheelbarrow with a horizontal force of 50 N on level ground over a distance of 5.0 m. If a friction force of 43 N acts on the wheelbarrow in a direction opposite that of the worker, what work is done on the wheelbarrow by the worker? 250 J 215 J 35 J O 10 J O None of these answers is correct.

A block of mass m = 2.50 kg is pushed d = 2.40 m along a frictionless horizontal table by a constant applied force of magnitude F = 15.0 N directed at an angle ? = 25.0° below the horizontal as shown in the figure below. (a) Determine the work done by the applied force.J(b) Determine the work done by the normal force exerted by the table.J(c) Determine the work done by the force of gravity.J(d) Determine the work done by the net force on the block.J

In the figure, a frictionless roller coaster car of mass m = 992 kg tops the first hill with speed v0 = 16.7 m/s at height h = 40.7 m. How much work does the gravitational force do on the car from that point to (a) point A, (b) point B, and (c) point C? If the gravitational potential energy of the car-Earth system is taken to be zero at C, what is its value when the car is at (d) B and (e) A? I know the first one is 0 J.

A 325 N force is pulling on an 85.0 kg refrigerator as it slides across a horizontal floor. The force acts at an upward angle of 25.0° above the horizontal. The coefficient of kinetic friction between the refrigerator and the floor is 0.150, and the refrigerator moves a distance of 5.50 m. Find (a) the work done by the pulling force, (b) the work done by the force of kinetic friction, (c) the net amount of work done on the refrigerator, and (d) if the refrigerator was initially at rest determine the speed of the refrigerator after the 5.50m displacement. (e) Include a force (or free-body) diagram of the situation. [Diagram 2 pts.]