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 box of apples of mass 22 kg slides 2.5 m down a ramp inclined at 44o to the horizontal.  The force…

A: mass of box of applies, m = 22 kg Length of ramp, L = 2.5 m Friction force, f = 79 N Degree of…

Q: A 35.0-kg child swings in a swing supported by two chains, each 3.06 m long. The tension in each…

A: Given,  Mass of child = 35 Length of chains = 3.6 m Tension = 434 N (a) child's speed at lowest…

Q: You go to the playground and slide down the slide, a 3.0-m-long ramp at an angle of 40° with respect…

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Q: You have been asked to design an escape ramp for trucks in a downhill 40 mph zone. Assuming a truck…

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Q: A trucks brakes fail while driving down a hill at a speed of 92 km/hr at the emergency ramp shown.…

A: Given: speed of truck= 92km/hr= 25.5555m/s mass of truck is 'M' kinetic energy of truck = 1/2 *M*V2=…

Q: A ball hangs from a 1.25 m string. If it is given a push at the bottom, what is the minimum speed…

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Q: You are a good tree climber and were helping your neighbor kid retrieve his pickle ball that was…

A: Given that,  The ball is about 5m above the ground, h = 5 m Downward initial velocity, u = 2 m/s…

Q: A 70 kg bicyclist is coasting down a long hill with a 3.5° slope. He’s moving quite rapidly, so air…

A: Given quantities: mass of the bicyclist(m) = 70 kg cross-section area(A) = 0.32 m2 drag…

Q: A box is launched up a rough incline with an initial velocity, vo = 6.7 m/s, as in the figure below.…

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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 170-Newton horizontal force is exerted upon a 6.3-kg box to move it across a level surface at a…

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Q: You are tasked with designing the runway on an aircraft carrier. The minimum speed for the F/A-18…

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Q: A Z-Drag is an arrangement of ropes in pulleys often used in rescue situations. Implemented…

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Q: You are driving a car. You pass over a speed breaker, whose shape is roughly a semicircle of radius…

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Q: A tourist looks up at a tall obelisk and desires to determine the height of this object. He…

A: Please see the attached image for the solution. If there are queries or if the image is not loading,…

Q: A desperate hiker has to think fast to help his friend who has fallen below him. Quickly, he ties a…

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Q: A basketball player jumps straight up for a ball. To do this, he lowers his body 0.270 m and then…

A: Given, lower height, hi = 0.270 m final height, hf = 0.940 m

Q: A box is dropped on a level conveyor belt that is moving at 4.5 m/s in the +x direction in a…

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Q: Children sled down a 41 m long hill inclined at 24 degrees. At the bottom, the slope levels out. If…

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Q: incline with The incline rizontal sur- ra distance

A: Given: A block with mass (m) starting from rest at point A sliding on a horizontal surface. The…

Q: A small object begins a free fall from a height of 29.0 m. After 1.10 s, a second small object is…

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Q: An object moves with an initial speed of 5.01 m/s. It then enters a region with friction causing the…

A: Work done by the constant friction force is:Wfric = Ffricd = μFNdbut FN = mgTherefore, Wfric =…

Q: Jill of the Jungle swings on a vine 7.00 m long. (a) What is the tension in the vine if Jill, whose…

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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: ng from the middle of a clothesline. The rope is attached at equal heights 24 units apart and the…

A: We know that here we have given that the rock hanging on the middle of the clothesline and the entre…

Q: Just before entering the tunnel, you notice the sign that says you must "use the tunnel with your…

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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.