A teacher attending a meeting decided to check what would happen with kinetic mercy if she changed the momentum. She decided to conduct an experiment using a dynamics cart. The student measured the speed of the cart as she released it from inclined surfaces with different slopes. She was able to increase the momentum by a factor of 17. By what factor did the kinetic energy change.

Q: A ball is released from a height ho above the concrete floor. Assuming that the collision between…

A: Since in elastic collision, Kinetic energy remains conserved and from energy conservation Potential…

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A: Consider an object of mass m is moving with a velocity v. Show the expression for the initial…

Q: 11. Two blocks of masses m and Зт т w 3m are placed on a friction- less, horizontal surface. A light…

A: (a)

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Q: Two toy cars are about to collide! Car A has a mass of 450 g and is travelling at 2.25 m s–1. Car B…

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Q: 19. On a very muddy American football field, a 95.0-kg linebacker tackles a 120.-kg halfback. Right…

A: Write the given values with the suitable variables. m1=95 kgm2=120 kgu1=8 m/su2=-4 m/s Here, m1, m2,…

Q: An orange pool ball (p = 10 kg x m/s) moves towards a black pool ball (p = 0 kg x m/s).  Then, the…

A: given, momentum of orange ball pi orange =10 kg x m/s momentum of black ball pi black =0 kg x m/s…

Q: A home-made 1.27 kg cannon is loaded with a 0.0540 kg tennis ball and placed on the floor at rest.…

A: Given: Mass of cannon,M = 1.27 kg  recoil  velocity of cannon, V = 7.8 m/s  mass of ball,m = 0.054…

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A: Mass of soccer ball: m = 450 g = 0.450 kg Angle of deflection with horizontal: θ = 60o Kinetic…

Q: (a) Find the recoil velocity of a 70.0-kg ice hockey goalie, originally at rest, who catches a…

A: Given: M = 70 kg m = 0.150 kg  v = 35 m/s

Q: A 2 kg object moving at 3 m/s collides with a 4 kg object that is stationary. If the collision is…

A:

Q: A pitcher claims he can throw a 0.141-kg baseball with as much momentum as a 2.96-g bullet moving…

A: pball=pbulletmballvball=mbulletvbullet       vball=mbulletvbulletmball             =2.96 g10-3…

Q: A 250 grams ball moving along the x – axis with speed of 50 m/s.  strikes a fence at 45o  angle and…

A: Given data: Mass of ball is,m=250 g=0.25 kg. Speed of ball is, v=50 m/s. Angle of striking of ball…

Q: Question 6 The kinetic energy of 50-kg runner is 250 J. What is the momentum of the runner? A 0.2 kg…

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Q: Three questions have the same general description. A 2400 kg truck is traveling at 24 m/s and runs…

A: Given problem is associated with a collision. Each time during the collision the momentum is…

Q: Which among the following types of collision is described to have a noticeable amount of kinetic…

A: (1) Which among the following types of collision is described to have a noticeable amount of kinetic…

Q: Two perfectly elastic balls, weighing 6 lbs and 4 lbs, approaching each other with a speed of 20…

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Q: A pellet gun fires ten 2.4 g pellets per second with a speed of 620 m/s. The pellets are stopped by…

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Q: A lighter block and a heavier block sit on a frictionless surface. Please answer the following…

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Q: Consider the two pucks shown in the figure. As they move towards each other, the momentum of each…

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A: The final velocity of the combined system is, V=m1v1-m2v2m1+m2=2.2 kg3.8 m/s-4.2 kg3.2 m/s2.2 kg+4.2…

Q: Hi there! I need some help! I am really confused. I do not know how to solve this! A block of mass…

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Q: In reviewing her lab book, a physics student finds the following description of a collision: " a 4…

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Q: Two balls, A and B, each of mass 1.0 kg, initially travel at the velocities VA = (10î + 20j ) m/s…

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Q: Three carts are moving on a frictionless horizontal track as shown in the figure.  The 4.00 kg cart…

A: (given) By conservation of linear momentum, m1= 4kg, v1=7 m/sm2=10 kg, v2=6 m/sm3=3kg  ,v3 =7mm3/s…

Q: Consider the two pucks shown in the figure. As they move towards each other, the momentum of each…

A: Consider the two pucks shown in the figure. As they move towards each other, the momentum of each…

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Q: A 0.50 Kg ball with a speed of 12 hits a wall and bounces back with only 0.75 of the original speed.…

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Q: 7 Which statement best describes the kinetic energy of the system during an inelastic collision? A.…

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Q: 11. Two blocks of masses m and w 3m are placed on a friction- less, horizontal surface. A light…

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Q: wo identical carts travel at 2 m/s in opposite directions on a common orizontal surface. They…

A: Let mass of cart is M kg then , Initial total Kinetic energy = [M (u)2/2] +[M(u)2/2 ] Here, u =…

Q: A 6.58 g pellet is shot horizontally from a BB gun at a speed of 23.8 m/s into a 26.3 g wooden…

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Q: What are the three most common ways for energy to leave a system during a collision?

A: It is asked to name  the three most common ways for energy to leave a system during a collision.

Q: In Figure, block A (mass 0.8 kg) slides into block B (mass 1.2 kg), along a frictionless surface.The…

A: Write the conservation of momentum equation mAvA,i+mBvB, i=mAvA,f+mBvB, f Plug the values into the…

Q: impulse needed to bring a 7.2 kg object traveling at 3.1 m/s to a speed of 1.4 m/s? draw a picture…

A: Given  Mass = 7.2 kg  Initial velocity u = 3.1 m/s Final velocity v = 1.4 m/s

Q: A body of mass 7 Kg and speed 7 m/s collides with another body of mass 5 Kg and speed 5 m/s. Both of…

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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.