Write NW if the situation implies no work done, and W if the situation shows work done. Write your answer before the number. A woman carries a child on her shoulder while watching a Buyogan Festival dance. NW A laborer pushes the wall. NW An athlete runs around the oval. W An elevator is going to the upper floor. W A ball is falling from the highest peak. W

Q: (a) What is the kinetic energy in joules of a 970-kg automobile traveling at 93 km/h? =_____ J (b)…

A: a) Given data The mass of the automobile is given as m = 970 kg. The velocity of the automobile is…

Q: Suppose you lift a 20 kg box by a height of 1.0 m. a) How much work do you do in lifting the box?…

A: We know that work done is given by  W=FDCOS θ a)W=mgh=20×9.8×1=196J

Q: (a) What is the kinetic energy in joules of a 1010-kg automobile traveling at 77 km/h?  J (b) How…

A: Given: The mass of the automobile is 1010 kg. The speed is 77 km/h.

Q: A 750 kg roller coaster car is pulled to the top of a hill 45 m high and arrives at the top with…

A:

Q: E. A bicyclist is stopped at the entrance to a valley, as sketched below: D Where would the…

A: Potential energy is highest at thr highest point. From figure that point is F. Hence, potential…

Q: A grocery cart is pulled along a rough horizontal surface by a horizontal force of 6 N. It moves…

A:

Q: (a) Calculate the work done on a 1500-kg elevator car by its cable to lift it 40.0 m at constant…

A:

Q: A box is pulled 2.0 meters along a rough surface at constant velocity using 100 N force inclined at…

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Q: a) If the driver suddenly applies the brakes and brings the car to a stop in 3.0 s, what is the work…

A: Since we only answer up to 3 sub-parts, we’ll answer the first 3. Please resubmit the question and…

Q: Suppose you lift a 20 kg box by a height of 1.0 m.a. How much work do you do in lifting the box?…

A:

Q: A car is traveling at 10 m/s.a. How fast would the car need to go to double its kinetic energy?b. By…

A:

Q: A young girl (m = 30 kg) rides a skateboard (m = 3.2 kg) at a speed of 4.2 m/s. (a) How much work…

A: Given Mass of young girl = m = 30 kg Mass of skateboard = 3.2 kg speed of young girl on skateboard =…

Q: A vertical force of 1510 N acts to lift a crate with a mass of 48.6 kg to a height of 24.5 m above…

A: (a) Work done on the crate is W=Fdcosθ=1510 N24.5 mcos0°=36995 J (b) Gravitational energy gained is…

Q: a. How much work does an elevator motor do to lift a 1000 kg elevator a height of 100 m at a…

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Q: (a) A big box is moved with 500 N by 1.2 m, find out how much work is done. (b) Now you applied…

A: Given: Applied force on box,  F=500 N To determine: (a) work done when box is moved a distance of…

Q: (a) Calculate the work done (in J) on a 1200 kg elevator car by its cable to lift it 38.0 m at…

A:

Q: A truck travels uphill with constant velocity on a highway with a 6.5° slope. A 55-kg package sits…

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Q: W A skier of mass 70 kg is pulled up a slope by a motordriven cable. (a) How much work is required…

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Q: (a) What is the kinetic energy in joules of a 1030-kg automobile traveling at 90 km/h?  J (b) How…

A: The mass of the automobile is m = 1030 kg. The initial velocity of the automobile is u = 90 km/h.…

Q: A slingshot will shoot a 10-g pebble 22.0 m straight up. (a) How much potential energy is stored in…

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Q: A child exerts a horizontal 15 N force on a 10 kg box to push it 7 m across a floor that has a…

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Q: Please answer all parts of this question with explanation

A: GivenMass m = 10 kgInitial velocity u = 8.0 m/sFinal velocity v = 4.0 m/s

Q: e. A sail boat is moving at a constant velocity. Is work being done by a net external force acting…

A: Since the boat is sailing at constant velocity, the acceleration of the boat will be zero. This…

Q: A hollow block of mass 3 kg is lifted to a height of 10 m in 3 minutes. a. What is the work done in…

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Q: (a) What is the kinetic energy in joules of a 900-kg automobile traveling at 92 km/h? ____ J (b)…

A: The kinetic energy (KE) of an object is the energy that it possesses due to its motion.  Kinetic…

Q: A box of 10.0 kg is accelerated from rest by a horizontal force at a rate of 2.0 m/s2 for 10.0…

A: Given data The mass of the box is given as m = 10 kg. The rate of acceleration is given as a = 2…

Q: (a) What is the kinetic energy in joules of a 1150-kg automobile traveling at 79 km/h? =____ Joules…

A: a. the kinetic energy in joules  is  KE=12mv2=121150kg79km/h×0.2777m/s1km/h2=2.76×105 J

Q: 20 N is needed to slide a box across a room to the right at a constant speed: a) How many Newtons…

A: Let us consider the forces come into picture in the above case,                                 i.…

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

A: (a).The amount work required to raise a 42.3 kg crate a distance of 1.5 m above a storeroom floor is

Q: (b) Calculate the work done in pushing a box through a distance of 50 m against the force of…

A: Let the mass of the box is M Distance by which we have to push this box is 50 m (d=50 m) Friction…

Q: e A certain car can accelerate from rest to thespeed v in T seconds. If the power output of the car…

A: Write the formula for the power in terms of force and velocity. Since the power is constant.…

Q: A child's sibling does the task of pushing a 10 kg box 7 m across the floor with a coefficient of…

A:

Q: a. Calculate the work done (in J) on a 1550 kg elevator car by its cable to lift it 39.5 m at…

A: Given : Mass of the car, m = 1550 kg Friction force, F = 135 N Lifted height of car, h = 39.5 m…

Q: A particle moves along an x axis. Does the kinetic energy of the particle increase, decrease or…

A: The kinetic energy of body                                     K=1/2 mv2…

Q: (a) How much work is done in raising a 55.1 kg crate a distance of 1.5 m above a storeroom floor?…

A:

Q: A grocery cart is pulled along a rough horizontal surface of 5.0 N. It moves through a distance of…

A: (a) Work done by this force is  W=Fdcosθ As the direction of force and the displacement is the same,…

Q: When an object moves on a circular path, what will be the work done?

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Q: To push a 52-kg crate across a floor, a worker applies a force of 190 N, directed 22° below the…

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Q: g bear slides, from rest, 12 m down a Lodgepole Pine tree, moving with a speed of 5.6 m/s just…

A: Gravitational potential energy = mgh

Q: (e) What is the total work done by all the forces after the block has traveled through a…

A: Here Normal force and gravitational force will do no work, Since they are in perpendicular direction…

Q: A 50 kg skier starting from rest travels 200 m down a hill that has a 20° slope. When the skier…

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Q: You ran to a mountain that is 2km high in 30 min. (a) If your mass is 80 kg, find out what…

A: a) at peak potential energy  U = mgh = 80×10×2000  U = 1.6×106 J

Q: A tow truck pulls a car 5.00 km along a horizontal roadway 6.2 using a cable having a tension of 850…

A: Given data: Displacement, d= 5 km = 5000 m  Tension, T = 850 N  Angle θ=35.0°

Q: (a) What force must be supplied by an elevator cable to produce an acceleration of 0.800 m/s2…

A: Dear student, this question contains more than three sub-parts. As per guidelines, we will answer…

Q: You push your physics book 2.10 m along a horizontal tabletop with a horizontal push of 2.10 N while…

A:

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.