A block of mass 3.57 kg is drawn at constant speed a distance 4.06 meters along a horizontal floor by a rope exerting a constant force of magnitude 7.68 N making an angle 15o with the horizontal. Compute (a) the total work done on the block, (b) the work done by the rope on the block, (c) the work done by friction on the block, and (d) the coefficient of kinetic friction between block and floor.

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?

Suppose the ski patrol lowers a rescue sled and victim, having a total mass of 85.0 kg down a 60° slope at constant speed, as shown in the figure. The coefficient of friction between the sled and the snow is 0.100. (a) How much work is done by friction as the sled moves 30.0 m along the hill. Enter to 3 significant figures W fric (b) How much work is done by the rope on the sled in this distance? Hint: use Newton's second law to find the tension. Enter to 3 significant figures Wrope W. grav 60° J (c) What is the work done by the gravitational force on the sled? Enter to 3 significant figures J W₁ W J (d) What is the work done by the normal force? WN= J total (e) What is the total work done? Enter to 3 significant figures Note: When adding work done by individual forces, DO NOT ROUND THE VALUES TO FIND THE SUM. J Sense-making: If the speed of the rescue sled & the victim is constant, what do you expect the total work done on the rescue sled and the victim to be? Does your answer support…

Consider a 900-kg car being pulled by a 1200-N force applied at anangle of 30 degrees with the horizontal. The car traveled a total distance of 5.0meters forward. The coefficient of kinetic friction between the road and the tires is0.25. Determine the work done (in Joules) by each of the external forces acting onthe car. Please show full solution.

A 2-kg car accelerates uniformly from rest to a speed of 10 m/s in the first 5s (frictionless horizontal road). Find (a) the work done on the car in this time, (b) the average power delivered bythe engine in the first 5s, and (c) the instantaneous power delivered by the engine at t = 3s.