A small boat is being pushed up a ramp into the back of a flatbed truck. The boat is sitting at the top of the ramp, which is located 1.4 m above the ground. The boaters think the boat is safe there, and begin to walk away. However, they have neglected the thin layer of ice that has formed on the ramp, which is angled at 30◦ up from the ground. Neglecting the friction between the boat and the ramp, how long do the boaters have before the boat reaches the bottom of the ramp?

Q: A 2 kg object is released from rest at the top of a frictionless incline of an 39.1 angle. Given the…

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Q: A small iron bob at the end of a string starts from rest and swings through an angle of 43° to its…

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Q: In the winter sport of bobsledding, athletes push their sled along a horizontal ice surface and then…

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Q: Suppose that you loft the ball with an initial speed of v = 16.1 m/s, at an angle of θ = 51.8° above…

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Q: Suppose you are standing on skis, headed straight down a slight incline covered with dry snow at 08…

A: Here, Assuming the skis are made of steel.The coefficient of static friction between ice and steel…

Q: A block is placed on a flat board that is hinged at one end (pivot). The free side of the board is…

A: Given data: The angle is θC. The vertical height is h.

Q: steel cube is placed on a frictionless ramp, tilted at an angle 6 to the toor, and given a velocity…

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Q: Broadjump, one squats and then pushes off with the legs to see how far one can jump. Suppose the…

A: Given:-  the person leaves at an angle of 45° and on level ground. the crouch position is h =  0.55…

Q: A drag-free projectile is launched from the origin of a coordinate system with an initial velocity…

A: Given data: Initial velocity, vo=10 m/s i^ + 20 m/s j^ Time, t=2.0 s Acceleration of the object…

Q: An athlete approaches the bar in a running broad jump competition with a velocity of 7.85 m/s. The…

A: Given that:Horizontal velocity, vx=7.85 m/sVertical displacemnet, h=55 cm=0.55 m

Q: A 91 kg block sliding horizontally across the floor has a coefficient of static friction of us : = =…

A: Given Mass of the block = m = 91 kg Coefficient of static friction = µs = 0.48 Coefficient of…

Q: In 1956, Frank Lloyd Wright proposed the construction of a mile-high building in Chicago. Suppose…

A: Given data: w=746 N Need to determine the change in weight.

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Q: Estimate the effective value of g on the top of a mountain which is twice as tall as Mt. Everest,…

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Q: the kinetic friction force that a horizontal surface exerts on a 60 kg object is 50 N. If the…

A: From Newton’s second law of motion.

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A: Given: The weight of the person is 520 N. The tension in the rope is 569 N. Depth of the cave is…

Q: An open box slides with constant speed across the frictionlesssurface of a frozen lake. If water…

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Q: A bicyclist is approaching an inclined stretch of road at 14 m/s. If he stops peadlaing at the…

A: Given,

Q: If Alice pulls the block up 29 meters, how much string must she pull through?

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Q: A deadlift is a weightlifting movement in which a lifter pulls a barbell from the floor directly…

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Q: Q. 142. A small disc P is placed on an inclined plane forming an angle e with the horizontal and…

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Q: In the winter sport of bobsledding, athletes push their sled along a horizontal ice surface and then…

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Q: A motorcyclist is coasting with the engine off at a steady speed of 20.0 m/s but enters a sandy…

A: Initial speed is, u = 20.0 m/s Distance to be travelled, S = 15 m

Q: 5.38 . A box with mass m is dragged across a level floor having a coefficient of kinetic friction u…

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Q: A particle of mass m moves along a frictionless, horizontal plane with a speed given by v(x) = a/x,…

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Q: More people end up in U.S. emergency rooms because of fall-related injuries than from any other…

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Q: In the winter sport of bobsledding, athletes push their sled along a horizontal ice surface and then…

A:

Q: A string breaks if it’s tension exceeds 100N. What maximum speed a stone attached to the string…

A: The tension should be equal to centripetal force exerted on the string for maximum safest speed,

Q: A block, initially at rest, has a mass m and sits on a plane inclined at angle theta. It slides a…

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Q: The muzzle velocity of a typical 500 g spud is 25 m/s . The force given by the spud is K/(x+.09)…

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Q: A 50 kg block is being pushed horizontally with a constant force such that the acceleration is I…

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Q: A 5 kg box sits at rest at the bottom of a ramp that is 8 m long and that is inclined at 30° above…

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Q: A flatbed truck on a horizontal road is loaded with a block whose mass M = 900 kg. Initially the…

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Q: Two blocks A and B have a weight of 10 lb and 6 lb , respectively. They are resting on the incline…

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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.