10. A snowboarder starts at the top of a 160. m tall hill with a velocity of 3.00 m/s. The portion of the hillcovered with snow is essentially frictionless, but the flat, horizontal section at the base of the hillcovered with mud is not. If the snowboarder masses in at 80.0 kg, and the coefficient of kinetic frictionbetween board and mud is 0.750, how much distance is required for the snowboarder to come to rest?

Step 1:Initial kinetic energy of snowboarder is,Ki=21mvi2where,m is the mass of snowboardervi is…

Answered: 10. A snowboarder starts 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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An antitank weapon fires a 3.00-kg projectile which acquires a speed of 50.0 m/s after traveling 90.0 cm down a launching tube. Assuming the projectile was accelerated uniformly, what was the average force that acted on it? a. 4.17×(10^3)N b. 3.62×(10^3)N C. 2.82×(10^3)N d. 2.00×(10^3)N
Dwayne ‘The Rock’ Johnson needs to escape from the fourth floor of a burning building (in a movie). He ties a rope around his waist and ties the other end to a 63 kg desk. Then he climbs out of a window and begins to lower himself down. The rope becomes taught when he lets go of the window sill. Then the desk begins to slide on the floor and he starts to accelerate downwards (starting from rest). Dwayne has a mass of 118 kg. The smooth window sill acts as a frictionless pulley. The desk is 10 m from the window. The kinetic friction of the desk sliding on the flooris 370 N. How fast is he travelling when th desk reaches the window?(Hint: Unbeknownst to the audience, The Rock aced Physics 1200 and knows that the tension in the rope is not 370 N)
A bowling ball m = 1.7 kg is dropped from a height h. It falls a distance, d, before encountering a large tube r = 4.2 m which is connected by two bolts, each of which can sustain a force of F = 190 N before failing. A-Write an expression for the maximum distance, d, above the pipe from which the ball can %3D %3D be dropped so the bolts do not fail. B- What is the distance, in meters?
A 0.1 kg ball is launched from a vertical cannon, 0.7 m high and 0.05 m wide. The cannon exerts a 146 N force on the ball for a period of 0.03 s. What is the final height ofthe ball?
1. A box is being pulled up a 40° incline by a 7.0 kg block suspended from a frictionless, massless pulley. The box does not start at the very bottom of the incline. The block is suspended 2.0 m above the ground. The coefficient of kinetic friction between the box and the incline is 0.40. The block is released from rest. At the moment the block hits the ground, the box is traveling at 2.0 m/s up the incline. What is the mass of the box?
4. A ½ kg mass is pushed at 6 m/s from position A below. It slides down a frictionless surface past position B. At position C it encounters a surface which has a coefficient of friction of 0.4. Location D is 30 meters past location C. From location D and on the surface is again frictionless. The height of the first downhill section is 22 meters. a. Determine the velocity of the mass at location B. b. Determine the velocity of the block at location D. c. Determine the velocity of the block at location E 10 meters past D. Z zm イニ0
3. An urban myth states that a penny dropped from the top of the Empire State Building (1440 ft tall) in NYC could be lethal. Ignore air friction and find the final velocity of the penny.
60.A 60.0-kg skier with an initial speed of 12.0 m/s coasts up a 2.50-m high rise as shown. Find her final speed at the top, given that the coefficient of friction between her skis and the snow is 0.80. K₁ 35° V₁ = ? 2.5 m
1. Sam, whose mass is 75 kg, takes off across level snow on his jet-powered skis. The skis have a thrust of 200 N and a coefficient of kinetic friction on snow of 0.10. Unfortunately, the skis run out of fuel after only 10 s. A. What is Sam’s top speed? B. How far has Sam traveled when he finally coasts to a stop?
A 30. kg box comes off a ramp with a speed of 6.0 m/s and slides along a level surface with a coefficient of kinetic friction of 0.30. How far does the box slide before stopping?
A 2.50 kg box sits halfway up a 16.0 m long ramp that is inclined at an angle of 16.00. You shove a second box, of mass 1.50 kg, that's at the bottom of the ramp, so that it starts sliding up the ramp with a speed of 20.0 m/s. It hits the first box, sticks to it, and they both continue to slide up the ramp. The coefficient of kinetic friction between the boxes and the ramp is 0.200. Where, from the bottom of the ramp, do they come to rest?
1. The 10-lb block has a speed of 4 ft/s when the force of F = (8t?) Ib is applied. Determine the velocity of the block when it moves s = 20 ft. The coefficient of kinetic friction at the surface is Uz = 0.15. Note: It's okay to use an online equation solver to calculate a number in this problem! v = 4 ft/s F = (8f) lb

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