Two snowy peaks are at heights H 850 m and h 750 m above the valley between them. A ski run extends between the peaks, with a total length of 3.2 km and an average slope of 30 ). (a) A skier starts from rest at the top of the higher peak. At what speed will he arrive at the top of the lower peak if he coasts without using ski poles? Ignore friction. (b) Approximately what coefficient of kinetic friction between snow and skis would make him stop just at the top of the lower peak?

Q: A car drives onto a section of the road which is covered in ice. The driver attempts to stop by…

A: stopping distance(s)=60m initial speed(u)=40 km/h=40×1000 m3600 sec=11.1111 m/sec final speed(v)=0…

Q: A car is traveling at 41.0 km/h on a flat highway. (a) If the coefficient of friction between road…

A:

Q: A man is driving his car with speed 52.0 mi/h on a horizontal stretch of road.   (A) When the road…

A:

Q: Two boxes are attached together by a rope which extends over a pulley where one box is suspended in…

A: Given Information: The angle of elevation of the ramp (θ) = 400  The coefficient of friction between…

Q: A trunk with a weight of 250N is at rest on a floor. The coefficients of friction between the trunk…

A:

Q: The parameters of instantaneous speed, altitude, net engine thrust, and wind speed are given for the…

A: For the load , ux= 200+30=230 m/s. ( Adding the speed                                            of…

Q: A car is traveling at 40.0 km/h on a flat highway. (a) If the coefficient of friction between road…

A:

Q: a girl is sliding down a slide while being pulled by a horizontal rope with a tension of 30N.The…

A:

Q: A frictionless plane is 10.0 m long and inclined at 35.0°.A sled starts at the bottom with an…

A: The formula for the distance travelled by the sled is,

Q: calculate the highest speed a car can reach over a 196.85 foot distance starting from a standstill.…

A: GivenDistance travelled by car, s=196.85 foot=60 mThe weight of the automobile is not uniformly…

Q: Sisyphus was a character in Greek mythology and was doomed in Hades to push a boulder to the top of…

A:

Q: A frictionless plane is 10.0 m long and Inclined at 28.0°. A sled starts at the bottom with an…

A: The acceleration of the sled is, a=mgsinθm=gsinθ=9.8 m/s2sin28°=4.60 m/s2 (a) The time taken by the…

Q: SCSU physics and astronomy student club has a recently established tradition of pumpkin drop, from…

A: According to the Newton's laws of motion , the final velocity (v) and the displacement () are…

Q: You are visiting your cousins for Christmas in New Hampshire where it is freezing. They are crazy.…

A: Applying Newton's second law on the sledge, ∑Fx=mgsin20°=ma     [1]∑Fy=N-mgcos20°=0    [2] From…

Q: A mass m slides up an incline (with = 32.1 degrees above the horizontal) until it stops momentarily…

A: Draw the free-body diagram of the mass.

Q: A 100-kg bale of hay falls of a truck traveling along a level road at 24.4 m/s. It lands flat on the…

A:

Q: A block starting from rest slides a distance of 5 m down an inclined plane which makes an angle of…

A: Given Block slide down at a distance, d=5m inclination angle, θ=370 coefficient of friction between…

Q: A crate slides down a ramp 14.65 m long inclined at 15.56°. How long will it take to reach the end…

A: length, L = 14.65 m  Angle, A =  15.56° coefficient of kinetic friction = 0.08

Q: A car is traveling at 50.0 mi/h on a horizontal highway. a) If the coefficient of static friction…

A:

Q: A body weighing 40 lb starts from rest and slides down a plane at an angle of 30° with the…

A: 1) The net force exerted on the body positioned is, Wsinθ=Wga+μNWsinθ=Wga+μWcosθsinθ=ag+μcosθ…

Q: A skater with an initial speed of 6.80 m/s stops propelling himself and begins to coast across the…

A: initial velocity (u) = 6.80 m/sFinal velocity (v) = 0 m/s Coefficient of kinetic friction (μk) =…

Q: A man has to push his boat on the shore across the mud to get to the water. The coefficient of…

A: The force of friction is given by  F = μ N where, N is the normal reaction and μ is the coefficient…

Q: 2. An athlete slides down from rest 40.0 meter along an icy hill which is 35 degrees from the…

A: Length of icy hill (L)=40 m Angle of inclination (θ)=35o Coefficient of kinetic friction (μ)=0.2…

Q: A 7-kg toboggan is kicked on a frozen pond, such that it acquires a speed of 2.1 m/s to the right.…

A: Given Mass of the toboggan is m=7 kg Initial speed of the toboggan is v0=2.1 m/s Final speed of the…

Q: A skier approaches the base of an icy hill with a speed of 12.5 m/s. The hill sloes upward at 24°…

A: the acceleration on an incline always has a magnitude = g Sinθ where θis the angle of incline…

Q: Write an expression for the coefficient of kinetic friction in terms of the symbols introduced in…

A:

Q: A snowboarder, with a mass of 70.1 kg (including equipment and clothing), is sliding down a track…

A: Given quantities: mass of the snowboarder (m) = 70.1 kg slope of the track (θ) = 37.1 degree initial…

Q: Piles of snow on slippery roofs can become dangerous projectiles as they melt. Consider a chunk of…

A: Consider the free-body diagram of the given arrangement of the chunk of snow at the ridge of the…

Q: A toy car has a friction coefficient of 0.03. On a 30 degree incline starting from rest, how fast…

A: Given data:  Coefficient of friction (μ) = 0.03 Angle of incline (θ) = 30° Initial velocity (u) = 0…

Q: A 12 kg block sits on a ramp inclined at 11 degrees that has a coefficient of friction of 0.9. A…

A: Let the mass of the suspended weight be m and tension in the string be T.

Q: A Box is placed on a 40° slope with a coefficient of friction of 0.30. The box starts approximately…

A: Given: θ=40°μslope = 0.30h=6.0 mμhori.=0.45

Q: with an initial speed of 8.10 m/s stops propelling himself and begins to coast across the ice,…

A:

Q: At a post office, a parcel that is a 20.0-kg box slides down a ramp inclined at 30.0° with the…

A:

Q: A block is sliding down a ramp at an angle of 0 = 29° to the horizontal. Its initial speed is 1.2…

A: Given, angle, θ = 29° initial speed of the block, u = 1.2 ms final speed of the block is zero as it…

Q: Consider the incline shown in the figure with inclination angle θ and height h. The coefficient of…

A:

Q: looking at a ski slope, the length of the slope is 10.00x10^2m and the top of the slope is at an…

A: Consider the motion of the person along the plane: Here N is the normal force, f is the friction…

Q: An amusement park in Dubai has a ramp which is frictionless. A child drops a smooth object and it…

A: By virtue of its height, the potential energy of the object at the top of the ramp is…

Q: A car is traveling down a hill that makes an angle of 21° with the horizontal. The driver applies…

A: (a) Use Newton's kinematic relation to find the acceleration of the car.…

Q: A 1370-kg car is skidding to a stop along a horizontal surface. The car decelerates from 27.6 m/s to…

A:

Q: You testify as an expert witness in a case involving an accident in which car A slid into the rear…

A:

Q: (a) Write an expression for the coefficient of kinetic friction in terms of the symbols introduced…

A:

Static and Kinetic Friction

Kinetic friction comes into existence when there are moving surfaces means in other words we can say that the force which comes into existing between moving surfaces is known as kinetic friction.