The coefficient of kinetic friction between a 20-kg box and the floor is 0.40. A pulling force is directed 37o above the horizontal. How much work does the pulling force do on the box in pulling it 8.0 m across the floor at a constant speed? What if the force pushes rather than pulls on the box and is directed 37 below?

A 2.03 kg mass is initially at rest upon a horizontal surface. An applied force of 17.6 N i then acts on the object over a distance of 2.92 m. If the final velocity of the object is 4.09 m/s i, what is the work done by kinetic friction over that distance moved?

A shopper pushes a grocery cart 39.25 m  on level ground, against a 37.06 N frictional force. The cart has a mass of 19.79 kg.  He pushes in a direction 24.67º below the horizontal. If the initial velocity was 1.78 m/s, and final speed was 16.88 m/2. What is the work done by the pushing force in unit of Joule?

A crate with a mass of 35.0 kg is pushed with a horizontal force of 150 N. The crate moves at a constant speed across a level, rough surface a distance of 5.30 m. (a) What is the work done (in J) by the 150 N force? J (b) What is the coefficient of kinetic friction between the crate and the surface?

The question is attatched below

A 50 N force is applied at an angle to the side of a box causing it to slide across a floor. The total work done to move the box 10m is 150 J (joules).  A) what is the angle at which the force was applied?  B) if the box has a weight of 735 N, what is the mass of the box?

A horizontal force of 150 N is used to push a 40.0-kg packing crate a distance of 6.00 m on a rough horizontal surface. If the crate moves at constant speed, find (a) the work done by the150-N force and (b) the coefficient ofkinetic friction between the crate and surface.

Several children are on a sled pulled by a four-wheeler across a level snow-covered field. The sled is moving at a constant speed of 9.25 m/s, and the tow rope (parallel to the ground) makes an angle of 35.0°, with respect to the velocity of the sled (see the figure below). a 35.0⁰ 1170 If the tension in the rope is 49.0 N, determine the work done (in J) on the sled by the tension in the rope in 10.5 s. J

An airplane flies 200 m at a constant altitude in a direction 30.0° south of east. A wind is blowing that results in a net horizontal force on the plane due to the air of 3.0 N in a direction 30.0° north of west. How much work is done on the plane by the air?

A 90.0 N box of papayas is pulled 10.0 m along a level surface by a rope. If the rope makes an angle of 20.0° with he surface, and the force in the rope is 75.0 N, how much work is done on the box?