A terrible accident happens on a commercial airliner traveling at 300m/s, and a passenger jumps from the plane at an altitude of 2500m. After falling to 2000m altitude they are descending vertically at 80m/s. What is their total mechanical energy change

Q: A pole vaulter wishes to clear a 4-m bar. How fast must she run? (Assume that all her kinetic energy…

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Q: A 45.2-g golf ball is driven from the tee with an initial speed of 42.4 m/s and rises to a height of…

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Q: What is the efficiency of an out-of-condition professor who does 2.00 ✕ 105 J of useful work while…

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Q: AWhen a 56 kg boy sits on a trampoline, it sags 0.10 m at the center. The trampoline is pulled down…

A: The objective of this question is to calculate the energy of the trampoline when the strap is…

Q: Suppose 65 passengers with an average mass of 75kg are transported by a ski lift to a height of…

A: Given: The number of passengers: n = 65. The average mass of a passenger: m = 75 kg. The height…

Q: 12. In the diagram below, if the mass of the car is 100 kg, R = 8 meters and h = 30 meters, then…

A: Mass of car: m = 100 kg Initial speed of car = 0 m/s Initial height of car: h = 30 m Final height of…

Q: At what average power must the engine of a car with a mass of 1.7 × 10³ kg, moving on an 11% slope…

A: SOlution: given that m = 1.7 × 10³ kg v = 31 km/hr =8.61 m/s slope =11%

Q: A child whose weight is 290 N slides down a 4.6 m playground slide that makes an angle of 45 with…

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Q: A 5.00-kg crate is sitting on the ground at rest. An electric motor with an efficiency of 0.20 (20%)…

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Q: Q 2) What is the total mechanical energy of falling baseball from the highest of 4 m, 3.22 m and…

A: The baseball has a mass of 0.3 kg, let m=0.3 kgAcceleration due to gravity, g=10 m/s2 The three…

Q: A 3 kg ball located 10 m above the ground, which serves as the zero point. What is the total energy…

A: The total energy of the system is equal to the potential energy of the ball at its location. It is…

Q: In an iconic movie scene, Forrest Gump (https://openstaxcollege.org/l/21ForrGumpvid) runs around the…

A: Step 1 When any object goes uphill, it had to do some work against gravity. This work is called…

Q: A1.3g marble is fired vertically upward using a spring gun. The spring must be compressed 8.3 cm if…

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Q: When jogging at 13 km/h on a level surface, a 70-kg man uses energy at a rate of approximately 850…

A: We have to determine the power used by man when jogging up slope

Q: A motorist driving a 147-kg car on level ground accelerates from 20.0 m/s in a time of 5.00 s.…

A: The kinetic energy of the car is, KE=12mv2KE=12147 kg20.0 m/s2KE=29400 J

Q: 14 kg object is dropped from rest on a surface inclined 31º from the horizontal and slides 10.9 m to…

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Q: A typical automobile engine has an efficiency of 25%. Suppose that the engine of a 1000-kg…

A: We know a typical automobile engine has an efficiency of 25 %. we have to find the maximum grade…

Q: Don't use chat gpt

A: We can solve this problem using the principle of conservation of mechanical energy, which states…

Q: An ice skater of 76 kg is moving at a speed of 12 m/s on a horizontal icy surface and then…

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Q: A 2kg wooden block is pushed against a spring (not attached) compressing it through 20cm from its…

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Q: Jacob is riding his bike down a tall hill. At the top of the hill, he has 2800J of potential energy.…

A: Whether the total amount of energy at the top is equal to the total amount of energy at the bottom…

Q: A 25.0 kg child slides down a long slide in a playground. She starts from rest at a height h₁ of…

A: Given data:  Mass (m) = 25.0 kg At Height (h1) = 22.00 m, speed (V1) = 0 m/s At height (h2) = 12.00…

Q: Suppose a pendulum bob is swinging back and forth. If the highest point is 12.5 cm above the lowest…

A: Recall conservation of mechanical energy KEi+PEi=KEf+PEf

Q: A 10-kilogram block is released as quickly as possible from point A on the ABC path. Since the…

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Q: Mark pushes his broken car 190 mm down the block to his friend's house. He has to exert a 160 NN…

A: distance moved = 190 m force exerted = 160 N speed = constant

Q: A block with m = 1kg moves up an incline (0-30°) with an initial speed of 10 m/s. Vo (a) If there is…

A: Given data: Mass of block is, m=1 kg . Angle of inclination is, θ=30∘. Initial speed of bock is,…

Q: You push a box up an inclined plane at a constant speed As the box moves up the incline, Select one…

A: Required : The potential energy and the kinetic energy of the box.

Q: A 69.0 kg diver is 3.30 m above the water, falling at speed of 4.60 m/s. Calculate her kinetic…

A: Given  Mass of diver m= 69kg Initial Height of diver hi = 3.30m Initial speed of diver Vi = 4.60m/s…

Q: In climbing up a rope, a 62-kg athlete climbs a vertical distance of 5.0 m in 9.0 s. What minimum…

A: Given that,The mass of an athlete is, m=62 kgThe vertical distance, d=5mTime required to climb, t=9…

Q: In the figure, a 4.1 kg block is accelerated from rest by a compressed spring of spring constant 660…

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Q: A small block is sent through point A with a speed of 11 m/s, as shown in the figure. Its path is…

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Q: A 492 kg rollercoaster car starts at rest atop a 38-meter hill. Find the total mechanical energy,…

A: Given data:  Mass (m) = 492 kg Initial velocity (v) = 0 m/s Height of first hill (h) = 38 m Height…

Q: While a 33 kg girl jumps on a trampoline, her speed is measured at different points and it is…

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Q: What is the efficiency of an out-of-condition professor who does 2.30 ✕ 105 J of useful work while…

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Q: An artillery shell is fired at a target 200 m above the ground. When the shell is 100 m in the air,…

A: In order to answer this issue, we must ascertain the artillery shell's velocity at the time of…

Q: A 82 kg wooden block is pushed against a spring (not attached) compressing it through 25cm from its…

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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: A 254 g textbook slides up a 20.3° incline that is 5.00 m long. Using conservation of energy and…

A: Using conservation of energy,

Q: A woman files a rifle with barrel length of 0,6600 m. Let (0, 0) be where the 150 g bullet begins to…

A: To calculate the work done by the gas on the bullet, we need to integrate the force over the…

Q: Ms. Dewitte's son, Theo, slides down a slide, from rest, with a length of 2.00 m at an incline of…

A: The height of the slide from the ground is, h = (length of slide)sin50° = 2sin50° = 1.53m Assuming…

Q: Melinda is pushing a chair along a 5 meter straight path through her living room. She is standing,…

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Q: A 8.00 kg bowling ball falls froma 3.50 m shelf. Just before hitting the floor, what will be its…

A: Conservation of Energy:The change in position of an object has a corresponding change in its…