Jim rides his skateboard down a ramp that is in the shape of a quarter circle...
Jim rides his skateboard down a ramp that is in the shape of a quarter circle with a radius of 5.00 m. At the bottom of the ramp, Jim is moving at 9.00 m/s. Jim and his skateboard have a mass of 73.8 kg. How much work is done by friction as the skateboard goes down the ramp? (unit = J)
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Jim rides his skateboard down a ramp that is in the shape of a
quarter circle...
Jim rides his skateboard (starting at rest) down a ramp that is in the shape of...
Jim rides his skateboard (starting at rest) down a ramp that is in the shape of a quarter circle with radius of 3.9 m. At the bottom of the ramp, Jim is moving at 7.5 m/s. Jim and his skateboard have a mass of 66.9 kg. How much work is done by friction as the skateboard goes down the ramp?
A boy of mass 25.0 kg skateboards down a quarter pipe of radius 3.00 m. He...
A boy of mass 25.0 kg skateboards down a quarter pipe of radius 3.00 m. He starts from rest and there is no friction. a)Find his speed at the bottom b)Find the normal force at the bottom Example 7.5: if the speed at the bottom is instead 6.00 m/s, what was the work done by friction?
A skateboarder with mass m_ s = 52 kg is standing at the top of a...
A skateboarder with mass m_ s = 52 kg is standing at the top of a ramp which is h_ y = 3.6 m above the ground. The skateboarder then jumps on his skateboard and descends down the ramp. His speed at the bottom of the ramp is v_ f= 6.8 m/s. Randomized Variables m_ s= 52 kg h_ y = 3.6 m V_ y= 6.8 m/s Write an expression for the work, w_ f, done by the friction force...
A student on a skateboard is moving at a speed of 1.40 m/s at the start...
A student on a skateboard is moving at a speed of 1.40 m/s at the start of a 2.45 m high and 12.4 m long incline. The total mass is 53.5 kg, air resistance and rolling resistance can be modeled as a constant friction force of 41.0 N, and the speed at the lower end of the incline is 6.60 m/s. Determine the work done (in J) by the student as the skateboard travels down the incline.
10. A skateboarder goes down a ramp formed by the arc ofa circle dS 8m of...
10. A skateboarder goes down a ramp formed by the arc ofa circle dS 8m of radius 8 m. The total mass of the skateboarder and her board is 65 kg. She starts from rest at A, the top of the ramp. Find the speed with which she leaves the ramp at B, given that there is a constant resistance of 35 N 409 8m
work , energy and power 120 m A boy rides a soapbox car down a hill...
work , energy and power
120 m A boy rides a soapbox car down a hill as shown. The total mass of the 60 m boy and the car is 50 kg. If 1 000) of work are done against friction, the total kinetic energy of car and rider at the bottom is
A 600 N box is sliding down a ramp. I am in front of the ramp...
A 600 N box is sliding down a ramp. I am in front of the ramp pushing uphill, so that the box slides with a constant velocity. The top of the ramp is 1.5 m above the bottom of the ramp and the ramp is 5.0 m long. As the box slides down, friction does work and 500 J are added to the thermal energy of the ramp and box. a. Calculate the work done by one external force in...
A 5 Kg box initially at rest slides down a ramp with friction acting on the...
A 5 Kg box initially at rest slides down a ramp with friction acting on the box. At the top of the ramp the box has a potential energy of 120 J. At the bottom, its kinetic energy is 30 J and the work done by the friction has a magnitude of 20 J. What is the mechanical energy of the box at the bottom of the ramp? A. 120J B. 150J C. 110J D . 140J E. None of...
A crate of fruit with a mass of 39.5 kg and a specific heat capacity of 3750 J/(kg⋅K) slides 7.70 m down a ramp inclined...
A crate of fruit with a mass of 39.5 kg and a specific heat capacity of 3750 J/(kg⋅K) slides 7.70 m down a ramp inclined at an angle of 37.9 degrees below the horizontal. 1. If the crate was at rest at the top of the incline and has a speed of 3.00 m/s at the bottom, how much work Wf was done on the crate by friction? Use 9.81 m/s2 for the acceleration due to gravity and express your...
1 45 kg is released from rest from the top of a rough ramp, with Mass...
1
45 kg is released from rest from the top of a rough ramp, with Mass - coefficient of kinetic friction 0.25 between the block and the incline, of height 3.2 m and length d 5.5 m. At the bottom of the ramp, the mass slides on a horizontal, frictionless surface until it compresses a spring of spring constant k 2. 110 N/m. a. Calculate the speed of the mass at the bottom of the ramp? b. How far does...
A skateboarder with mass m_ s = 52 kg is standing at the top of a ramp which is h_ y = 3.6 m above the ground. The skateboarder then jumps on his skateboard and descends down the ramp. His speed at the bottom of the ramp is v_ f= 6.8 m/s. Randomized Variables m_ s= 52 kg h_ y = 3.6 m V_ y= 6.8 m/s Write an expression for the work, w_ f, done by the friction force...
10. A skateboarder goes down a ramp formed by the arc ofa circle dS 8m of radius 8 m. The total mass of the skateboarder and her board is 65 kg. She starts from rest at A, the top of the ramp. Find the speed with which she leaves the ramp at B, given that there is a constant resistance of 35 N 409 8m
work , energy and power
120 m A boy rides a soapbox car down a hill as shown. The total mass of the 60 m boy and the car is 50 kg. If 1 000) of work are done against friction, the total kinetic energy of car and rider at the bottom is
1
45 kg is released from rest from the top of a rough ramp, with Mass - coefficient of kinetic friction 0.25 between the block and the incline, of height 3.2 m and length d 5.5 m. At the bottom of the ramp, the mass slides on a horizontal, frictionless surface until it compresses a spring of spring constant k 2. 110 N/m. a. Calculate the speed of the mass at the bottom of the ramp? b. How far does...
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