If the roller coaster car at the top of the 95.0 m drop hill has a speed of 2.25 m/s, (a) what willbe its speed at the bottom of the hill if we assume that net work done by non-conservativeforces is zero? (b) Given that the actual speed of the roller coaster car at the bottom of thedrop hill is 40.5 m/s. How much work did the non-conservative forces do in going from thetop of the hill to the bottom of the hill? Given that the mass is 725 kg. (c) Include a sketch ofthe situation. [Diagram 2 pts.]

Step 1: Step 2: Step 3: Step 4:

Answered: If the roller coaster car at the top of…

College Physics

11th Edition

ISBN:9781305952300

Author:Raymond A. Serway, Chris Vuille

Publisher:Raymond A. Serway, Chris Vuille

Chapter1: Units, Trigonometry. And Vectors

Section: Chapter Questions

Problem 1CQ: Estimate the order of magnitude of the length, in meters, of each of the following; (a) a mouse, (b)...

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In 1990 Walter Arfeuille of Belgium lifted a 281.5-kg object through a distance of 17.1 cm using only his teeth! (a) How much work did Arfeuille do on the object? (b) What magnitude force did he exert on the object during the lift, assuming the force was constant. arket pushes a cart with a force of 35 N directed at an angle
Suppose the ski patrol lowers a rescue sled and victim, having a total mass of 90.0 kg, down a ? = 62.0° slope at constant speed, as shown in the figure. How much work is done (in J) by friction as the sled moves 30.0 m along the hill? How much work is done (in J) by the rope on the sled in this distance? What is the work done (in J) by gravity on the sled? What is the total work done (in J)?
A 56.5-kg hiker starts at an elevation of 1270 m and climbs to the top of a 2660-m peak, (a) What is the hiker’s change in potential energy? (b) What is the minimum work required of the hiker? (c) Can the actual work done be greater than this? Explain.
A worker pushes a 30.0-kg crate a distance of 4.5 m along a level floor at constant velocity by pushing horizontally on it. The coefficient of kinetic friction between the crate and the floor is 0.25. (a) What magnitude of force must the worker apply? (b) How much work is done on the crate by this force? (c) How much work is done on the crate by friction? (d) How much work is done on the crate by the normal force? By gravity? (e) What is the total work done on the crate?
please help me with this
Hawkeye pulls a quiver attached to his bow back 68 cm by exerting a force that increases uniformly with distance from 0 to 285 N. How much work does Hawkeye do on the string? Round your answer to 2 decimal places.
A spring and block are in the arrangement of .When the block is pulled out to x=+4.0 cm, we must apply a force of magnitude 360 N to hold it there.We pull the block to x= 11 cm and then release it. How much work does the spring do on the block as the block moves from x=+5.0 cm to (a) x=+3.0 cm, (b) x=-3.0 cm, (c) x=-5.0 cm,and (d) x=-9.0 cm?
A roller-coaster car of mass 1.50 × 103 kg is initially at the top of a rise at point Ⓐ. It then moves 35.0 m at an angle of 50.0° below the horizontal to a lower point Ⓑ. (a) Find both the potential energy of the system when the car is at points Ⓐ and Ⓑ and the change in potential energy as the car moves from point Ⓐ to point Ⓑ, assuming y = 0 at point Ⓑ. (b) Repeat part (a), this time choosing y = 0 at point Ⓒ, which is another 15.0 m down the same slope from point Ⓑ.
A force of 17 Ib is required to hold a spring stretched 3 in. beyond its natural length. How much work W is done in stretching it from its natural length to 9 in. beyond its natural length?
True or False (No Explanation Needed) Work is also equal to the change in potential energy. Work done by gravity is always negative. An object at a higher point has larger potential energy than that of an object at a lower point. Friction affects the amount of energy an object has. Maximum work happens when the force is perpendicular to the direction of movement.
A one-dimensional force has the form F(x) = A x2-Bx where A =1.8 N/m2 and B = 0.65 N/m. How much work is done by the force in moving a 1.2 kg box from x = 0.78 m to x = 2.4 m? Enter your answer in Joules.
A factory worker pushes a 30.0 kg crate a distance of 3.7 m along a level floor at constant velocity by pushing downward at an angle of 30∘ below the horizontal. The coefficient of kinetic friction between the crate and floor is 0.25. How much work is done on the crate by this force when the crate is pushed a distance of 3.7 m? How much work is done by the normal force? How much work is done by gravity? What is the total work done on the crate?

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