Calculate the average force a 90.62kg sprinter exerts on the track to accelerate from 2.92m/s? to 7m/s? in a distance of 22.93m, if she encounters a headwind that exerts an average force of 28N against her. Use the concept of work-energy and show clear formula and substitution.
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- Problem 2: A 5.0 kg block starts at the bottom of a 30-degree incline ramp with an initial velocity of 7.0 m/s. The coefficient of kinetic friction between the block and the ramp is 0.25. Find the distare, Lalong the ramp where the block has a speed of 3.0 m/s as it is going up the ramp. Use conservation of mechanical energy to sce this problem. (------ Show all work for full credit.A block of mass m= 5.00 kg is reased from point A and slides dows the frictionless track shown in the figure. calculate the speed of the block at piont B and C. g= 9.8m/s2Using energy considerations, calculate the average force (in N) a 64.0 kg sprinter exerts backward on the track to accelerate from 2.00 to 5.50 m/s in a distance of 25.0 m, if he encounters a headwind that exerts an average force of 30.0 N against him.
- (14 The driver of a 1900 kg car (including passengers) traveling at 24.0 m/s slams on the brakes, locking the wheels on the dry pavement. The friction force between tire rubber and dry concrete is 14,000 N. a. Use the work-energy principle to calculate how far the car will travel before stopping. Express your answer with the appropriate units. b. How far would the car travel if it were going twice as fast? Express your answer with the appropriate units.Sam's job at the amusement park is to slow down and bring to a stop the boats in the log ride. If a boat and its riders have a mass of 1200 kg and the boat drifts in at 1.3 m/s how much work does Sam do to stop it? Express your answer in joules.Kindly provide the solution to the following question using the GRASS method. Work and Energy question, (Unit: Energy and Momentum): While cleaning out the basement of your parents you come across a box of old toys with Transformers and GI Joes. You push the box along a smooth level surface with a force of 35 N at an angle of 25° below horizontal. If the box is accelerated from a speed of 0.60 m/s to 1.45 m/s over a distance of 3.5 m, what is the mass of the box? The images attached are the formulas for this unit. Please make sure to show all your work using the GRASS method and using formulas from this unit (Energy and Momentum).
- Can someone help me answer this question with all the steps included pls and thank you!!A 65.0-kg file cabinet of is sliding down a rough ramp for a distance of 5.00 m as shown. The friction force on the box is 75.0 N. During this process, what is the net work done on the cabinet, in Joule? Use g = 10.0 m/s2.Using energy considerations, calculate the average force (in N) a 60.0 kg sprinter exerts backward on the track to accelerate from 2.00 to 8.50 m/s in a distance of 25.0 m, if he encounters a headwind that exerts an average force of 30.0 N against him. (Enter a number.) ___N