A stone with a mass of m = 2 kg fell from a certain height during ∆t = 2 sec with the initial velocity equal to zero. Find the potential energy of the stone at half the height. Free fall acceleration is g = 10 m/s2. Disregard the resistance of the air. A) 180 J. B) 200 J. C) 220 J. D) 240 J

Q: A racetrack for a soapbox derby is 300 m long and a vertical drop of 28 m. (a) Calculate the change…

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Q: I need help with this homework problem.

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Q: 1B. A crate of mass 10.0 kg is pulled up a rough 20o- incline. The pulling force is 100 N parallel…

A: mass of crate (m) = 10 kg θ = 20oPulling force = 100 N coefficient of kinetic friction = 0.4distance…

Q: 18. Consider a particle of mass m is freely drawn from the"h "height. The three different positions…

A: Energy lost by P. E = Energy gain by K. E

Q: A car accelerates from 0 to 38.3 m/s in 3.67 s. The mass of the car is 1.02e+03 kg. (a) What is the…

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Q: 2) A spring with spring constant k = 200 N/m is used as a launcher for a small block whose mass is…

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Q: 4. An 8000 kg roller coaster, traveling along the frictionless track shown, has velocity v, = 30…

A: As per our policy, we shall answer the first 3 subparts. Kindly submit the other parts as fresh…

Q: A 5.2 g marble is fired vertically upward using a spring gun. The spring must be compressed 8.9 cm…

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Q: 3. The potential energy U in Joule of a particle of mass is 4kg moving in the x-y plane is given by…

A: Given data: Potential energy of the particle is given as, U= 6x + 8y + 5 Where, x and y are the…

Q: 3B. A 2-kg block is dropped from a height of 1.5 m above the end of a vertical uncompressed spring,…

A: “Since you have posted a question with multiple sub-parts, we will solve first three subparts for…

Q: ch work (úin Joules) is done in lifting a 2.5 kg dictionary from the floor onto a shelf 1.9 m high?…

A: Since we only answer upto 3 sub-parts, we will answer the first 3. Please resubmit the question and…

Q: 4. A 7 kg object is freely falling through the air. When it is 10 m above the ground it has a…

A: mass of object (m) = 7 kg height above the ground (h) = 10 m velocity (v) = 8 ms

Q: A 1,300 kg car starts at rest and rolls down a hill from a height of 10 m. (a) How much kinetic…

A: The energy possessed by an object, which is in motion with velocity v is known as the kinetic energy…

Q: A hydroelectric generator converts kinetic energy of water into electrical energy. Each second 234/…

A: Given that Volume of water V = 2347 m3 Net mass of the water m = 2347000 kg Height of fall h = 112 m

Q: A racetrack for a soapbox derby is 300 m long and a vertical drop of 28 m. (a) Calculate the change…

A: Vertical height, h = 28 m Mass, m = 115 kg Acceleration due to gravity, g = 9.8 m/s²

Q: A 50 g ball is thrown from a window with an initial velocity of 8.0 m/s at an angle of 30 above the…

A: (a) kinetic energy of the ball at the top of its flight

Q: A 0.25 slug (3.6 kg) object begins moving at 46 mph (20.6 m/s). A force slows it down to 37 mph…

A: Mass of the object is m = 3.6 kg Initial speed of the object is u = 20.6 m/s Final speed of the…

Q: A 7.2 g marble is fired vertically upward using a spring gun. The spring must be compressed 6.7 cm…

A: (a)Write the expression for gravitational potential energy.

Q: 16 A 35 kg dog in Yulin China on a 4.0 m long swing is released from rest when the swing supports…

A: (a) Maximum potential energy Umax=Ui=mgl1-cos90-θ=35 kg9.8 m/s24.0 m1-cos70.0°=902.74 J≈900 J

Q: A pole-vaulter just clears the bar at 5.50 m and falls back to the ground. The change in the…

A: We’ll answer the first question since the exact one wasn’t specified. Please submit a new question…

Q: A 5.8 g marble is fired vertically upward using a spring gun. The spring must be compressed 9.7 cm…

A: Given: Mass of the marble = 5.8 g Compression in the spring = 9.7 cm Distance travelled by the…

Q: A projectile weighing 25 N is fired directly upward and rises to a height of 400 m. (a) What is its…

A: Weight of the projectile is Fw = 25 N  Height H = 400 m

Q: A 0.65-kg ball undergoes free-fall from a height of 1.00 m above the ground. (a) Using the kinematic…

A: mass = 0.65 kg H = 1 m initial speed = 0 m/s  using equation of motion at y = 1 m v2 - u2 = 2 gh v2…

Q: The electric motor of a model train accelerates the train from rest to 0.765 m/s in 19.0 ms. The…

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Q: A 2.5kg block slides along a frictionless surface with a speed of 4 m/s. The blocks slides along…

A: Given Mass = 2.5 kg Velocity = 4 m/s Spring tension = 15 cm

Q: A 0.600-kg particle has a speed of 2.00 m/s at point Ⓐ and kinetic energy of 7.50 J at point Ⓑ. What…

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Q: A force of 6.0 N is used to accelerate a mass of 1.0 kg from rest for a distance of 12 m. The force…

A: Given, Force=6.0 N Mass = 1.0 kg Distance = 12 m Coefficient of kinetic friction = 0.30

Q: A 5.0 g marble is fired vertically upward using a spring gun. The spring must be compressed 8.0 cm…

A:

Q: 6. Suppose an object of mass m = 4kg is at rest at a given location with potential energy of Ui =…

A: Given data:  Mass (m) = 4 kg Initial velocity (vi) = 0 m/s Initial potential energy (Ui) = 200 J…

Q: Betty weighs 420N and she is sitting on a playground swing seat that hangs 0.53m above the ground.…

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Q: 1. A 1.75 kg ball rolls down an incline into a spring. The ball starts from rest at a height of 3.10…

A: Since you have asked question with multiple sub-parts in a single request, we would be answering…

Q: 42.0-kg projectile is fired at an angle of 30.0° above the horizontal with an initial speed of 136…

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Q: A 3.6 g marble is fired vertically upward using a spring gun. The spring must be compressed 2.9 cm…

A: In this question we have to find the change in gravitational potential energy and change on elastic…

Q: 1B. A crate of mass 10.0 kg is pulled up a rough 20°- incline. The pulling force is 100 N parallel…

A: Given: The mass of the crate is 10 kg. The angle of inclination is 20o. The pulling force is 100 N.…

Q: A 0.582-kg basketball is dropped out of a window that is 6.72 m above the ground. The ball is caught…

A: mass of ball = 0.582Kg H0 =6.72 m Ht = 2.11 m

Q: The electric motor of a model train accelerates the train from rest to 0.830 m/s in 20.5 ms. The…

A: Given:           Initial velocity of the train u = 0; Final velocity of the train v = 0.83 m/s and…

Q: A 40 kg box initially at rest is pushed 5.0m along a rough horizontal floor with a constant applied…

A: Given data: Mass of the box m =40 kg Distance d =5.0 m Force F =130 N Coefficient of friction ,…

Q: A 5.8 g marble is fired vertically upward using a spring gun. The spring must be compressed 9.7 cm…

A: Given:

Q: '1. A 40Kg box initially at rest is pushed for 5.0m along a rough horizontal floor by a constant…

A:

Q: A surfer is catching a wave. Suppose she starts at the top of the wave with a speed of 1.4 m/s and…

A: Given: Mass of surfer(m) = 59 kg vi=1.4 m/s vf=9.4 m/s Vertical height (h)= 2.7 m

Q: 1. A child with a mass of 45.0 kg is on the top of a slide that is 12.0 m long and inclined 30°…

A: Disclaimer:“Since you have asked multiple question, we will solve the first question for you. If you…

Q: 11. (1) A small 35g toy rocket is launched straight up from the ground at 108 km/h (a) What is the…

A:

Q: A 0.6 kg mass slides down a frictionless plane which makes an angle 60° with the horizontal. It…

A: (c) The vertical distance is, ∆y=lsinθ=0.6 msin60°=0.520 m The speed of the block is, v=2g∆y=29.8…

Q: and it accelerate with 3m/s^2 and move a distance 20 m in a time 4 sec . a) find the final velocity…

A: The mass of the object is m = 10kg  The acceleration of the object is a = 3 m/s2 The distance it…

Instantaneous Power

Power is defined in physics as the amount of energy transmitted or transformed per unit time. The watt is the unit of electricity in the International System of Units, equivalent to one joule per second.