Show-work problem: A 2.5-kg block (#1) is placed on a frictionless ramp and released from rest at height h = 50 cm. Block #2 %3D (4.0 kg) waits at rest at point A.

Q: Sam’s job at the amusement park is to slow down and bring to a stop the boats in the log ride. If a…

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Q: in Q3. A 7kg bowling ball moves at 3m/s. How fast must a 2.45g Ping-Pong ball moves so that thecwo…

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Q: hen is the kinetic energy of the block greatest?

A: Kinetic energy of oscillating spring =(1/2)k (a2 -x2 ) Where a is amplitude  x=displacement from…

Q: What is the kinetic energy of a car of 1000kg moving at 90km/hr?. show the units

A: Mass of car ( m ) = 1000 kg  Velocity of car ( v ) = 90 km/hr      Convert km/hr to m/s  km/hr *…

Q: A roller coaster car starts from rest at the top of a large hill as shown below. Where does the car…

A: Given data:  Initial velocity of Roller coaster (v0) = 0 m/s Start from top of the hill

Q: A frictional force of 0.2 N acts on a 0.4 kg air-hockey puck, opposing its motion, for a distance of…

A: According to the Work-energy theorem. The net work done on a body is equal to the change in kinetic…

Q: A 40 kg runner is initially jogging at 1.5 m/s.  She exerts a net 20 N force for 4 m to speed up.…

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Q: How much work does the force of friction do (in J)?

A: At given height the block will have only potential energy and no kinetic energy because its velocity…

Q: A few seconds after an adventure-seeker whose mass is 67kg has left their skydiving jump plane, they…

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Q: Two blocks of masses m and 3m are placed on a frictionless, horizontal surface. A light spring is…

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Q: Missy Diwater, the former platform diver for the Ringling Brother's Circus, had a kinetic energy of…

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Q: A 45.0 kg sprinter achieves a speed of 2.50 m/s from rest. What are his initial and final kinetic…

A: Given that, Mass of a sprinter, m = 45 kg Initial speed, u = 0 Final speed, v = 2.5 m/s The kinetic…

Q: 1) Calculate the total mass (kg) of a person climbing a hill 200 meters high if the work done is…

A: Since you have asked multiple questions, we will solve the first question for you. If you want any…

Q: A 40 kg woman ran with an average velocity of 9 m/s. What was her average KINETIC ENERGY? * 1…

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Q: 11. A ball weighing 20 N is dropped from rest from a height of 8 meters above the ground. Assuming…

A: Total mechanical energy is the sum of kinetic energy and potential energy.

Q: If the ball is dropped with an initial potential energy of 19800J what would be its maximun kinetic…

A: Solution: According to the conservation of energy, total energy of the ball is constant. Hence,…

Q: Which has more kinetic energy: a 0.0019-kg bullet traveling at 412 m/s or a 7.3 x 107-kg ocean liner…

A: The equation for the kinetic energy is given by

Q: Starting from rest, a ball of mass 3 kg experiences a constant force of 9 N. What is the final…

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Q: How much kinetic energy will a 70 kg diver have when he reaches the water after jumping off a 5.0 m…

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Q: A 1 kg skate rat drops from the top of a 3 m high half-pipe ramp. Ignoring friction, how much…

A: Given that the mass of the skate rat is m = 1Kg its is drop from 3 m height  so its has potential…

Q: The famous cliff divers of Acapulco leap from a perch 35 m above the ocean. How fast are they moving…

A: Details Given: Height of cliff = 35m The velocity of cliff divers is calculated from the formula of…

Q: What is the guinea pig's kinetic energy?

A: The kinetic energy of an object moving with a speed v can be represented as, Here, m represents the…

Q: You're riding a toboggan down an icy run to a frozen lake, and you accelerate the 80.0-kg…

A: Given : m=80kg u=1m/s v=2m/s t=2s

Q: You know that when you throw, you exert a force of 655 N on the ball (which has mass 1.84 kg), and…

A: Given: The applied force is 655 N. The mass of the ball is 1.84 kg. The displacement of the ball is…

Q: A 20 kg roller-coaster car is moving at 25.1 m/s along a straight horizontal track. What will its…

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Q: How fast would a 30-kg kid need to run in order to have the same kinetic energy as an 8.0-g bullet…

A: Given Mass of thee kid is mk=30.0 kg Mass of the bullet is mb=8.0 g=8.0×10-3 kg Speed of the bullet…

Q: 4. A0.15 kg ball is thrown into the air and rises to a height of 20.0 m. How much kinetic energy did…

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Q: How much kinetic energy will a 70 kg diver have when he reaches the water after jumping off a 5.0m…

A: Scenario - A diver jumps from a certain height into water. Given : Diver mass →m=70 kg Dive height…

Q: A ball of 6 kg has velocity given by = ( 6 î - 3 j+ 2 K) m/s %3D What is the kinetic energy? Answer…

A: Given data The mass of the ball is m = 6 kg The velocity of the ball is v→=6 i^-3 j^+2 k^  m/s

Q: at is the Potential energy of an 82kg boulder placed on top o b) 4810 J a) 4180 J c) 4108 J a…

A: (8)Given values:- Mass of the boulder,(m)=82 kg ----(1) Height of the hill,(h)=5 m ----(2)…

Q: The skateboarder shown below has a potential energy of 2,800 J at a height of 4 meters. Assuming…

A: According to law of conservation of energy  TEi = PE TEf= PE - fw PE = potential energy fw= Work by…

Q: During a fitness test for the US marines, Jacob and Janelle ran up a hill. Jack is 1.5 times as…

A: Let Mass of janelle be m. Given mass of jack=1.5×m( mass of janelle) Let time taken by jack be t.…

Q: It takes 3 s for 25 g car to go down a 10 degree incline for 1 m. ? How much work was done by…

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Q: On a playground slide, a child has potential energy that decreases by 1000 J while her kinetic…

A: The dissipative force involved during sliding motion is the frictional force between the ground and…

Q: A 62 kg gymnast somersaults onto a mat at a speed of 10.37 m/s. When she is finished with the flip,…

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Q: How much work is done by the car?

A: We know that Change in kinetic energy is called network done Workdone=(KE)Final - (KE)Intial   Here…

Q: An outfielder throws a 0.150-kg baseball at a speed of 30.0 m/s and an initial angle of 30.0°. What…

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Q: If you push a crate horizontally with 100N across a 10-m factory floor and the friction between the…

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Q: Missy Diwater, the former platform diver for the Ringling Brother's Circus, had a kinetic energy 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.