A bicycle and rider have a combined mass of 59.50 kg and are moving at 2.50 m/s. A 59.50 kg person is now given a ride on the bicycle. (Total mass is 119 kg.) How did the addition of the new rider change the energy at the same speed?

Q: An automobile traveling at 25 km/hour has kinetic energy equal to 1 x 104J. What is the mass of the…

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Q: A 9.50 g bullet has a speed of 1.26 km/s. (a) What is its kinetic energy in joules?  ________ kJ…

A: The kinetic energy of the bullet is KE=12mv2=129.50×10-3 kg1.26×103 m/s2=7541.1J≈7.54kJ

Q: You have an object of mass 3.9 kg. If it is moving at a speed of 12.3 m/s and is a distance of 34.1…

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Q: A typical wind turbine extracts 40% of the kinetic energy of the wind that blows through the area…

A: Given Data:The mass of the wind passing the blades each second is Speed Kinetic energy is given by…

Q: What is the mass of an object moving at a speed 7.1 m/s that has a kinetic energy 242 J?  Give your…

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Q: what is the kinetic energy of a bullet of mass 5.00 g traveling at a speed of 305 m/s. what is the…

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Q: subcompact car with a mass of 1.60×103 kg and a loaded dump truck with a mass of 1.90×104 kg are…

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Q: How fast must a 2.5-g ping-pong ball move in order to have the same kinetic energy as a 145 g…

A: Given  Mass of ping pong m1=2.5g Mass of base ball m2=145g Speed of baseball v2=37m/s     Let speed…

Q: Sanic the hedgehog is running after Dr. Eggmon with a speed, v. In order to catch up to Dr. Eggmon,…

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Q: A 1250 kg car is moving at 16.6 m/s. Then, 377 kJ of work is done on the car to increase its speed.…

A: According to work-energy theorem, the work done by the net force on a body is equal to change in…

Q: A baseball weighs 1.3 N and has a speed of 26 m/s just before the catcher catches it. What is the…

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Q: How fast (in meters per second) must an iron ball with a mass of 51.2 g be traveling in order to…

A: Given: The mass of the object is 51.2 g. The kinetic energy of the object is 16.15 J.

Q: How much work is done on a 30.0 kg mass to change its speed from 3.00 m/s to 4.00 m/s over a…

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Q: 7 kg school kid is hurrying to catch the school bus. He runs at 3.1 m/s. How many es of kinetic…

A: Given:- The mass of the kid m = 47kg  The speed of the kid v  = 3.1 m/s  Find :-  The kinetic energy…

Q: An object with mass m = 152 kg moving at the speed of v = 0.53 m/s was stopped by an external force…

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Q: A stone with a mass of 2.40 kg is moving with velocity (5.20î – 1.80ĵ) m/s. (HINT: v2 : () What is…

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Q: An object with mass 99 kg is moving at the velocity of −3.6 m/s. What is its kinetic energy in the…

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Q: An object with a mass of 2.30kg is initially moving at a rate of 4.16m/s. A net work of 32.5 J is…

A: According to the work- energy theorem, change in kinetic energy equal to the work done by the system

Q: You are observing a child on a pogo stick bouncing as high as they can. You know the mass of the boy…

A: Given data The mass of the boy and pogo stick is: m = 32 kg The amount of height bounces is: h = 2 m…

Q: An object is traveling at a final speed of 12 m/s. What was the initial speed of the object,…

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Q: As shown in the figure below, two masses m₁ = 5.10 kg and m₂ which has a mass 60.0% that of m₁, are…

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Q: Large meteors sometimes strike the earth , converting most of their kinetic energy into thermal…

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Q: What is the kinetic energy of a 738.66 N woman jogging at

A: Given Weight of woman is W=738.66  N Acceleration due to gravity is g=9.80 m/s2. Velocity is v=0.93…

Q: A ball has a mass of 4 kg. Suppose it travels at 14 m/s. Find the kinetic energy possessed by it .

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Helmholtz Free Energy

The Helmholtz free energy is a thermodynamic potential used to calculate the measure of useful work from a closed system. This system is kept at constant temperature and volume. German physicist Hermann Helmholtz introduced this concept in 1882.