a a (а) (6)

pls help not in scientific notation pls

A water-skier is being pulled by a tow rope attached to a boat. As the driver pushes the throttle forward, the skier accelerates. A 73.5-kg water-skier has an initial speed of 5.2 m/s. Later, the speed increases to 12.2 m/s. Determine the work done by the net external force acting on the skier. W =

A water-skier is being pulled by a tow rope attached to a boat. As the driver pushes the throttle forward, the skier accelerates. A 61.2-kg water-skier has an initial speed of 5.1 m/s. Later, the speed increases to 12.1 m/s. Determine the work done by the net external force acting on the skier.

A crate is placed at the upper end of the 2.0 m long ramp that is inclined at 20° to the horizontal and allowed to slide down the ramp starting from rest. The crate has a mass of 150 KG and the coefficient of kinetic friction between the crate and then incline is 0.25. Draw a diagram showing all the forces acting on the crate. How much work is done by the gravity on the crate during the slide? How much work is done by friction during the slide? Use the work energy theorem to calculate the speed attained at the bottom of the ramp.Also,Which force does no work during the slide, and why?

14. A coin slides over a frictionless plane and across an y coordinate system from the origin to a point with ry coordinates (3.0 m, 4.0 m) while a constant force acts on it. The force has magnitude 2.0N and is directed at a counterclockwise angle of 100 from the positive direction of the r axis. How much work is done by the force on the coin during the displacement?

A 126.2 N carton is pulled up a frictionless baggage ramp inclined at 33.0  above the horizontal by a rope exerting a 79.8 N pull parallel to the ramp's surface. The carton travels 6.15 m along the surface of the ramp. Calculate the work done on the carton by the rope, gravity, and normal force of the ramp. What is the net work done on the carton? Suppose that the rope is angled at 40.8  above the horizontal, instead of being parallel to the ramp's surface. How much work does the rope do on the carton in this case?

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A. How much work is done by w⃗ ? Express your answer using three significant figures. W =  1.00×104   J   B. How much work is done by T⃗ 1? Express your answer using three significant figures. W =  -6340   J   C. The two ropes seen in (Figure 1) are used to lower a 255 kg piano exactly 4 m from a second-story window to the ground. Express your answer using three significant figures.

The overworked Amazon delivery person is driving up a steep hill with an incline of 26° when a box they forgot to secure starts sliding toward the back of the truck. The 3.5 kg box starts from rest near the drivers seat and slides 2.1 m along the floor to the rear door. The coefficient of kinetic friction between the box and the floor is 0.36. What is the work done by the weight of the box? Wmg 31.6 J What is the work done by the Normal Force? WN = 0 What is the work done by the frictional force? Wfk = 23.31 What is the net work done on the box? Wnet What is the change in kinetic energy for the box? AKE How fast is the box moving just before it hits the rear door? Vfinal = J J X J J ms