Calculate the force needed to bring a 950-kg car to rest from a speed of 90.0 km/h in a distance of 120 m (a fairly typical distance for a non-panic stop). «

Q: If the speed of a car is increased by 70%, by what factor will its minimum braking distance be…

A: Consider the speed of the car in the first case is v.

Q: A mass of 3.00 kg is initially at rest upon a frictionless incline with a 30.8 degree angle of…

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Q: Gayle runs at a speed of 3.20 m/s and dives on a sled, initially at rest on the top of a…

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Q: At full power, how long for the car to accelerate 0-64.0mph? Neglecting friction and air resistance

A: Use the expression for the power, apply work-energy theorem, and solve for the power provided by the…

Q: A skier traveling 13.2m/s reaches the foot of a steady upward 19.70975 incline and glides 20.29696m…

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Q: Gayle runs at a speed of 4.00 m/s and dives on a sled, initiallyat rest on the top of a…

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Q: A skier (m=53.0 kg) starts sliding down from the top of a ski jump with negligible friction and…

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Q: A softball having a mass of 0.25kg is pitched at 82.8km/h. By the time it reaches the plate, it may…

A: In the given question, Mass of the softball (m) = 0.25kg Initial velocity of softball (u) = 82.8km/h…

Q: OnEarth,in the absence of air friction, a rock thrown vertically upward at a velocity of 64 feet per…

A: Given, Velocity v = 64 feet s(t)=64t-16t2 .....(1)   Differentiating equation (1)…

Q: Which situation DOES NOT demonstrate a work done? O A lady in an ascending elevator. O A waiter…

A: The work done by a force can be defined as the product of the displacement of an object and the…

Q: On October 9, 1992, a 27-pound meteorite struck a carin Peekskill, NY, creating a dent about 22 cm…

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Q: When a body possessed a total KE of 69J, and is moving at a speed of 66m/s, find the weight of the…

A: Kinetic energy is the motion energy, An object that has motion - whether it is perpendicular or…

Q: A race car travelling on a straight and flat stretch of track must overcome 1.5 kN of resistance to…

A: Given : F = 1.5 kN = 1.5 x 103 N v = 190 km/hr = 190 x 1000/3600 = 52.78 m/s

Q: A horizontal force of 1.5 N acts on a 0.2kg mass to accelerate it along a horizontal path. How fast…

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Q: A skier traveling 12.5m/s reaches the foot of a steady upward 21.7151 incline and glides 17.25655m…

A: Write the given values with the suitable variables. u=12.5 m/sθ=21.7151°d=17.25655 mv=0 m/s Here, u,…

Q: A runner with mass 140 kg run with speed 40 km/h on a wet road with a friction. Find the friction…

A: Given: Mass M = 140 kg Speed v = 40Km/h

Q: A 60.0 kg skier with an initial speed of 10.0 m/s coasts up a 2.50 m high rise as shown in the…

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Q: ar's bumper is designed to withstand a 4.68 km/h (1.3 m/s) collision with an immovable object…

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Q: Is it possible that no transfer of energy takes place even when a force is applied to a body?

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Q: Apollo 14 astronaut Alan Shepard famously took two golfshots on the Moon where it’s been estimated…

A: Given:Mass of the projectile ball, m = 0.045 kgRange = 4 km = 4000 mAngle of projection = 45…

Q: The driver of a passenger car puts the car to "rest" at the speed of 90 km/h, therefore, the car's…

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Q: Cite an example wherein  force exerted on a body does no work. Explain.

A: Work done is defined as the product of force, displacement and cosine of angle between force and…

Q: If the speed of a car is increased by 95%, by what factor will its minimum braking distance be…

A: Consider the initial speed of the car is u.

Q: Compute the minimum power necessary to operate aski lift that carries skiers along a 45.0slope. The…

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Q: What is the power of the force required to move a 4500 kg elevator cab with a load of 1800 kg upward…

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Q: A traveler pulls on a suitcase strap at an angle of 31.6 degrees above the horizontal. if 566 J of…

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Q: When a punter kicks a football, is he doing any work on theball while the toe of his foot is in…

A: The punter can only be applying a force when he is in contact with the football. Therefore the…

Q: - A moving object whose initial KE is 10 J is subject to a frictional force of 2 N that acts in the…

A: Given data:  Initial kinetic energy (KEi) = 10 J Final kinetic energy (KEf) = 0 J Force (F) = 2 N…

Q: A horizontal force of 1.5 N acts on a 0.2kg mass to accelerate it along a horizontal path. How fast…

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Q: A skydiver of mass 60kg is falling at a terminal velocity of 80m/s. How much power is gravity…

A: Given that :m=60 kgv=80 m/shere,m is the mass of the skydiver, andv is the terminal velocity

Q: Compute the minimum power necessary to operate a ski lift that carries skiers along a 45.0 slope.…

A: Given value--- slope = 45 degree.  weight = 700 N. speed = 5 m/s. No. of skiers = 100 . We have to…

Q: Assuming no losses due to friction or air drag, how fast was the 115 kg bicyclist moving before…

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Q: A pushing force of 10 000 N is applied to the backside of a car at an angle of 25.0° above the…

A: Force F = 10000N Horizontal angle θ=25∘ Distance s =15 m Mass of the car m = 2250 Kg

Q: Disregarding friction, a roller coaster with a vertical drop of 46 m will achieve a speed of about…

A: Given h1 = 46 m V1 = 30 m/s h2 = 2h1

Q: a 1.75-kg block at rest on a ramp of height h.When the block is released, it slides without friction…

A: From conservation of energy, the required expression for the height is,

Q: A mass of 2.12 kg is initially at rest upon a frictionless incline with a 33.2 degree angle of…

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Q: While a roofer is working on a roof that slants at 36.0 ∘∘ above the horizontal, he accidentally…

A: When the object is kept on an inclined plan, following forces act on it, 1. force due to gravitation…

Q: Can a centripetal force ever do work on an object? Yes No

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Q: A parachutist weighing m=70Kg (including equipment) falls vertically from a height of 1500 meters…

A: Given data: The mass of parachutist is m=70 kg. The height from ground is h=1500 m. The time after…

Q: A mass of 2.0kgis projected with a speed of 5.5m/sup a plane inclined 20 degrees with the…

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Q: Why does a bicyclist pick up speed on a downhill road even when he is not pedaling? Does this…

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Q: An office worker smacks a table, bringing his hand to rest in 0.0025 seconds from an initial speed…

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Spring Potential Energy

The potential energy is the energy possessed by a body by virtue of its position or the energy held by the object due to its position relative to other objects, its force like stresses, charge, and other factors affecting the particles of the body. The potential energy is the measure of the net work done by or on the body. The spring potential energy is the potential energy stored due to the deformation of an elastic spring and this elasticity is due to the stretched spring. The elasticity is the ability of a solid-state matter to come back to its equilibrium position or original position after any kind of external force is acted on it. It is also known as Elastic potential energy. The potential energy here is caused due to the displacement of the spring from its equilibrium position to another position and this potential energy is equal to the net work done due to the stretching of the spring. It also resembles the same mechanics of the oscillation of a simple pendulum, where due to the external force, the object moves from its equilibrium position to its maximum ends and the periodic motion continues till it comes back to the equilibrium position to rest.