Two identical test cars are driving down a test track and hit their brakes at the same position. One car is travelling at twice the speed as the other. (a) Compare the kinetic energies of the two cars. (b) Use the idea of work to explain how much farther the faster car travels while braking

Q: How much work input by the second bicyclist's muscles was required to accelerate themselves…

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Q: Can I have an answer for this one, please?

A: Given values:- Distance,(d)=8 m -----(1) Work done,(W)=301 J ----(2) Suppose (F) force is exerted by…

Q: A sled starts from rest at the top of a snow-covered incline that makes a 22° angle with the…

A: Solution: Ff=mgsinθ Here, Ff is the friction force, m is the mass, θ is the angle that sled makes…

Q: Assume that you are driving a car 2000kg car at the sped of 20m/s(72km/h). You then see a tree at…

A: Given : mass of car, m = 2000 kg              velocity of car, v = 20 m/s             coefficient of…

Q: a) Calculate the work of the applied force (in J).   (b) Calculate the work of friction (in J).…

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Q: A spring has a natural length of 2m. It requires 384 j of work to stretch the spring to 10m.…

A: Work done: The definition of the work required for the displacement (x) of the particle from point a…

Q: You throw a book with a mass of 2 kg straight up from the ground at an initial velocity of 9 m/s. a)…

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Q: Using the Work-KE Theorem, calculate the ratio of the forces needed to bring a 1545-kg car to a stop…

A: The unit for speed given in the question is km, which is incorrect. So it is assumed km/h, it is…

Q: A skier goes down a hill and passes point A with a velocity of 10m/s. Calculate the speed of the…

A: Given Initial speed of the skier at point A is va=10 m/s Height of point A is given as ha=50 m…

Q: Provide an example of a situation that would help explain the concept of "zero work", in regards to…

A: In physics the work may be defined as the dot product of force and displacement. By dot product of…

Q: A 3500 lb SUV accelerates from 0 to 30 mph over a distance of 80 feet. Use work and energy to…

A: As per the work-energy theorem, Here, W, K, F, d, m, u, and v represent the force’s work, the car’s…

Q: The work done by a nonconservative force on an object depends on the path taken from the initial…

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Q: A 13 kg block moving to the right at 25 m/s collides perfectly inelastic with a 17 kg block at rest.…

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Q: A box lies on a plane at an angle θ = 15° to the horizontal, with μs = 0.39 and μk = 0.35 between…

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Q: During the pitching motion, Clayton Kershaw exerted an average horizontal force of 60 N against the…

A: The horizontal force applied to baseball                                F = 60 N Mass of baseball…

Q: A batter hit a 0.145kg baseball straight upward with an initial speed of 25.0m/s. Use the…

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Q: 3) The world’s highest ski flying hill is Tauplitz/Bad Mitterndorf in Austria. The hill is 197 m of…

A: Given Data Height of the hill is h=197 m Angle of inclination of the hill is θ=35° Coefficient of…

Q: Chumani and Heni are loading identical fridges onto a truck (see gure 1). Chumani lifts his fridge…

A: Given that: Chumani and Heni are loading identical fridges onto a truck. Chumani lifts his fridge…

Q: A 10N horizontal force is exerted on a 100kg object that slides on a frictionless, horizontal…

A: First method: According to the Newton’s second law, the acceleration of the object is, F=maa=Fm=10…

Q: In calculating the work W necessary to stretch a spring from its natural length of 8 centimeters to…

A: SOlution: To calculate the work done on spring to stretch.

Q: A cowboy shoots a pistol in the air when he rides a horse into a small town. The muzzle speed is…

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Q: A large cruise ship of mass 6.00 x 10 kg has a speed of 12.8 m/s at some instant. (a) What is the…

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Q: Suppose the ski patrol lowers a rescue sled carrying an injured skiier, with a combined mass of…

A: Given            mass = m= 80.1 kg          inclination =θ=600          μk= coff. of friction =0.1

Q: Identify a case where an object is moving over a surface with friction, but the frictional force…

A: When the object moves in a pure rolling motion, the work done by the friction will be zero.

Q: A (3 kg) object has of (6 Ê - 23) m ls. Find the magnitude of the initial velocity? what is its…

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Q: Procopio is diving a car (m= 1000 kg) at v= 11.11 mis when he stepped on the brakes. The car…

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Q: A skier of mass 89kg starts from rest at the top of the hill that is inclined 35 degrees with…

A: Given angle is 35 degree coefficient of kinetic friction- 0,25 Hill height=50 meter

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: 5. Starting from rest, a 5.00-kg block slides 2.50 m down a rough 30.0° incline. The eoeffieient of…

A: Explanation and solution shown in the picture below ?

Q: A block of mass M, which was initially stationary, is lowered downwards using a rope with an…

A: The free-body diagram for the problem is shown in the figure: Applying Newton's second law…

Q: A 996 kg car is travelling at a velocity of 15.4 m/s.  How much work must be done on the car by the…

A: Given: The mass of the car is 15.4 m/s. The mass of the car is 966 kg. The final velocity of the car…

Q: A 1000 kgm car travelling at 100 km/hr starts its brakes to slow down. it travels a distance and…

A: Given data: Mass of car, m=1000 kg Initial velocity of car, u=100 km/hr=27.78 m/s (since, 1 m/s =…

Q: Which do you think requires more work: moving up stairs at a slow speed (ex: walking) or moving up…

A: We know the  formula of work  W= F × S Where F =Force  S= displacement

Q: A 1900 kg car moves down a level highway under the actions of two forces: a 960 N forward force…

A: Using work-energy theorem The change in kinetic energy of the particle is equal to net work done on…

Q: Answer this and provide step by step solution. Explain your answer as well. A 3000kg truck is to be…

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Q: (a)By what factor does the kinetic energy of a car increase when its speed doubles? triples? (b)…

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Q: A car with mass 1520 kg is traveling down the highway at a speed of 18 m/s when the driver slams on…

A: Given mass of car m = 1520 kg initial speed of car u = 18 m/s as car comes to the rest then final…