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If you want to lift a 20-kg box off the floor to a height of 0.5 meters ...


If you want to lift a 20-kg box off the floor to a height of 0.5 meters how much work ... How much work will it take to lift a 2-kg pair of hiking boots 2 meters off the ...

Work and Energy Notes - District 196


When you lift a box up off the floor, you must exert a force at least equal to ... Kinetic Energy is produced when a net force does work on the object ... For example, if a 0.5 kg ball is travelling at 10 m/s, then it has ... Equation for PE: PE = mass x acceleration due to gravity x height above the ground ... How much work is done?

What is your average power if you lift a 33.8 kg box at

www.jiskha.com/search/index.cgi?query=What is your average power if you lift a 33.8 kg box at a constant speed to a height of 3.27 m in 6.10 s?

A box with a mass of 5 kg is lifted (at constant velocity) to a height of 3 m to place it on the ... A 5.o kg box is lifted to a height of 10 meters at a constant speed. a) How much power is .... Arrange the given roller coasters from least to greatest lift height -20,-8,0,16,60,. ... A motor lifts a 70.0 kg box off the ground, starting ...

Physics Homework Help: Work, Power - Physics 24/7


Only the component of the force parallel to the motion does work. ... if a rope is tied to a box and the box is pulled horizontally along a floor, some ... How much work was done on the text book? ... ANSWER: None, since F = 0, W = 0. ... frictionless coasters is pushed 5 m along a ramp that makes an angle of 20º to the ground.

Work and Energy Review - with Answers #2 - The Physics Classroom


A 1200 kg car and a 2400 kg car are lifted to the same height at a constant ... How much work does he do on the box while walking across the floor at constant speed? ... kinetic energy is directly related to the square of the speed (KE=0.5*m* v<sup>2</sup>). ... off a diving board that is elevated to a height of 10 meters above the water.

7. Kinetic Energy and Work Kinetic Energy - Physics


If the velocity of an object ... same velocity, the bowling ball has much ... If we drop a 3-kg ball from a height of h = 10 m, ... Work: Work is the energy transferred to or from an object by mean of a force ... Consider a box being dragged a distance d across a frictionless floor: .... A 3-kg mass is dropped from a height h = 5 m.

The work-energy theorem states that the work done - Northern ...


If work is the only means to move energy into or out of our system than it will be true ... room at a constant velocity and put it on a shelf at the same height. .... Lifting the box off the floor requires you to supply a force at least equal to its .... On Planet X a 0.5 kg space rock falls a distance of 2.5 meters and looses 20 J of ...

Momentum, Work and Energy - Galileo and Einstein


Nov 29, 2007 ... A 5 kg medicine ball is thrown directly at her by someone standing in front ... a speed of 0.5 meters per second, so the final momentum is 0.5x50 = 25, ... If you lift up a box of books from the floor and put it on a shelf, you've done ... It's obvious that you will have to do twice as much work to raise a box o...

Mechanical Energy - Physics


Specifically, the gravitational energy is the product of weight times height: Gravitational ... as much gravitational energy as if you lift it only one foot, because of the greater height. On .... height. For example, lifting a single brick two meters off the ground takes ..... How much work must you perform to lift a 5-kg bag of groce...

Homework Solutions - eiu.edu


If he does this 20 times, how much work has he done? (4 ed) 7.2 If you push a 40.0-kg crate at a constant speed of 1.40 m/s across a horizontal floor ( k = 0.25), at what ... Air resistance -- like all friction forces -- always does negative work. ... The block is not jumping up off the plane and it is not burrowing down into the plane...

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If you want to lift a 20 kg box off the floor to a height of 05 meters how ...


If you want to lift a 5-kg box to a height of 2 meters how much work must be done ? ... a 20-kg box off the floor to a height of 0.5 meters how much work will it take?

Work Done against Gravity - CPO Science


height because only the vertical distance an object moves matters for ... If you have to lift a new sofa to a second-floor apartment, the work done ... Elijah does 44 joules of work against gravity to pull a 0.5-kilogram rope with a ..... A lever used to lift a heavy box has an input arm of 4 meters and an output arm of 0.8 meters.

Work and Power - TuHS Physics


If you think about it, it is the same equation that you use even when an object is ... s=5m and F=20N just like in the previous problem, but this time q =60<sup>o</sup> ... Work: A 50-kg crate is pulled 40m along a horizontal floor by a constant force ... Cos(90<sup>o</sup>) =0 ... power rating of a motor that can lift a 600 Kg load 30 meters in 5 seconds?