If the skater needs 4176 J of potential energy at the top of the hill, what height must the ramp be?

Q: What is the work done by the force pulling a block 1 meter with two 0.5 kg masses on it?

A: We know, Workdone=Force ×displacement

Q: How much work is done in carrying a 2 kg book 2 m above the ground

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Q: 2.5 kg rubber ball is released from a slide, said ball is at a height of 16 meters above the ground,…

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Q: how much more work will be required to stretch it an additional 4.0 cm?

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Q: It takes a force of 35 N to stretch a 45-cm spring to 90 cm and hold it there. How much work was…

A: Given The force to stretch the spring is F=35 N. The initial length of spring is xi=45 cm. The…

Q: A 45 kg object is lifted to a height of 18 m. The Potential energy of the object is_ О а.7.938 k] O…

A: Given : m = 45 kg h = 18 m

Q: A 5.0 kg book is held 1.0 m above the floor for 50 sec. The work done on the book is ?

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Q: The work you do when pushing a shopping cart twice as far while applying the same force is A) half…

A: Given data:  New displacement (d') = 2d New force (F') = F Required: New work done

Q: why is the maximum work a force can do on an object occur when the force is in the same direction of…

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Q: how much work is done in raising a 42.3 kg crate a distance of 1.5 m above a storeroom floor? What…

A: Given: Mass of the crate m = 42.3 kg height h =1.5 m

Q: A ball of 0.1 kg is dropped from rest. When it falls through a distance of 2 m, the work done by the…

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Q: A student does 300 J of work to lift her little sister up 1.5 m what is the mass of the little…

A: Given data. , Work done by the student ( W ) = 300 J Lift her sister ( h ) = 1.5 m Let , The mass of…

Q: If a 75 kg runner can accelerate from standing start to a speed of 10 m/s in 3 seconds, how much…

A: Since the runner starts from a standing position, the initial velocity of the runner is u=0 m/s.…

Q: Does the work required to lift a book to a high shelf depend on how fast (in seconds) you raise it?…

A: We know that the work done is given by  W = FSCosΘ   ---->(1) Where F is the force  S is the…

Q: What is the potential energy (compared to the floor) of a 1200N box which is 4.0 m above the floor?

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Q: A weight lifter holds 900 N over his head .is he doing work on the weights?

A: Given, Force = 900 N

Q: A bag of wheat weighs 50 kg. To what height should it be raised so that its potential energy may be…

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Q: The mechanical energy of a basketball is 400 J. If the kinetic energy is 224 J, what must the…

A: Given : Mechanical energy = 400 J Kinetic energy = 224 J

Q: How fast must a 400 kg motorbike be moving to have a kinetic energy of:  (a) 1,200 J     (b) 1,600…

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Q: How much work is done by a powerlifter that pushes a car with a force of 800N at a distance of 200 m

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Q: A dog races up the stairs in a time of 1.80 seconds.  If the stairs are 12 feet high, how much power…

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Q: How much work (in J) must be done to lift a stack of bricks, which has a mass of 700 kg, from the…

A: mass m = 700 kg height h = 13 m g = 10 m/s2

Q: A 99.2 kg object rises by 35.8 m.  How much potential energy (in joules) has this object gained?

A: Potential energy(P) is given by:- P=mgh Where, m=99.2kg g=9.81m/s^2 h=35.8m

Q: A book is found to be sitting at the top of a book shelf with a height of 2.5 meters. If the book is…

A: Let the mass of the book = M Initial height = 2.5 m New position of book = 1 m lower than its…

Q: is a person climbing a ladder potential or kinetic energy?

A: We know that energy can neither be created nor destroyed. However, energy can always change its form…

Q: How much work is required to lift a 4.5 kg backpack 2.0m to put it on ?

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Q: At the tallest drop in the rollercoaster, the cart has 500 J of potential energy and 0 of kinetic…

A: Required : Total mechanical energy at the end of the rollercoaster.

Q: Jalen, whose mass is 55kg, stands at the top of a 3.5 meter tall diving board above the pool. How…

A: where, acceleration due to gravity, g = 9.8 m/s2.

Q: Calculate the potential energy of the 50-kg skater where his speed is at 3.4 m/s.

A: We have initial velocity u=1.3 m/s and final velocity v=3.4 m/s traversing a distance of s=38 m from…

Q: Calculate the change in potential energy of a 35.0 kg box that is placed on a 2.25 m high chair and…

A: mass of box = 35 kg initial position of box = on top of 2.25 m high chair final position of box = on…

Q: The work you do when pushing a shopping cart twice as far while applying double the force is A)…

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Q: If a roller coaster has a gravitational potential energy of 15J and kinetic energy of 5J, what is…

A: Gravitational potential energy, P = 15 J  Kinetic energy, K = 5 J

Q: of a spring instrument, the spring shortens by 3.1 cm. What is the amoun

A: GivenMass of Athelete, m=51.4 kgSpring compressed to distance , x=3.1 cm=0.031 m

Q: What is the potential energy of a 5kg box positioned 9.6m above the floor?

A: The expression for the potential energy is,

Q: How much work (in J) must be done to lift a stack of bricks, which has a mass of 50 kg, from the…

A: Given data The mass is m=50 kg The height of the lift is h=6 m The accleration due to gravity is…

Q: dog races up the stairs in a time of 1.80 seconds.  If the stairs are 12 feet high, how much power…

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Q: When a body is brought down from a height H1 to height H2, the Potential Energy of the body…

A: Potential energy is defined as energy possessed by a body due to its position in this surrounding.…

Q: How much work is required to lift at 3.10 KG object from the bottom of a well 11.1 M deep?

A: Let h denotes the depth of the well, m denotes the object’s mass, U denotes the potential energy of…

Q: You were told that on top of the skyscraper that you are in, the gravitational potential energy at…

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Q: A 5-kg object is pushed across a level surface with a force of 12 N for a distance of 6 m. How much…

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Q: A 30 kg boulder is on top of an 80 m cliff. If the rock falls, how much is its potential energy when…

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Q: If a snowboarder going over a jump has 45,000 J of mechanical energy, and you know the snowboarder…

A: Answer            15000J

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: A boy is weighing 150 N runs up a flight of stairs. The vertical distance between the floors is 5.5…

A: Given data:  Weight (mg) = 150 N Vertical distance (h) = 5.5 m Required: Work done by gravity

Q: A truck travelling at a speed of 50 km/h has a kinetic energy of 600 kJ. If the speed of the truck…

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Q: How much work is required to throw a ball with a mass of 0.23 kg 30.0 m/s? Assume the ball starts…

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Q: A Boeing 747 weighing 520,000 pounds needs to be raised 7.34 feet in the air so maintenance can be…

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