e A certain car can accelerate from rest to thespeed v in T seconds. If the power output of the car remains constant, (a) how much time does it take for the car to accelerate fromv to 2v? (b) How fast is the car moving at 2T seconds after starting?

Q: 145 g baseball is thrown vertically up with a speed of 25 m/s. What is its initial kinetic energy? o…

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Q: (a) What is the average useful power output (in W) of a person who does 5.00 x 106 J of useful work…

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Q: A child whose weight is 267 N slides down a 6.1 m playgroundslide that makes an angle of 20 with the…

A: a. Here the magnitude of work from the friction kinetic force is equal to the change in thermal…

Q: a 5.75 kg objects passes throuh the origin at tme t=0 ,such that its x component of velociy is 5.00…

A: Given, mass of the particle, m = 5.75kg x- component of velocity, vx = 5.00 m/s y- component of…

Q: (a) How long will it take an 850-kg car with a useful power output of 40.0 hp (1 hp equals 746 W) to…

A: It is given that,

Q: A 64.6 kg runner has a speed of 3.30 m/s at one instant during a long-distance event. HINT (a) What…

A: (a) Given the mass of the runner is 64.6 kg and the speed is 3.30 m.s-1. Therefore, the kinetic…

Q: A large cruise ship of mass 6.50 x 107 kg has a speed of12.0 m/s at some instant. (a) What is the…

A: a). Formula to calculate the kinetic energy is,

Q: A large cruise ship of mass 7.00 × 10’ kg has a speed of 10.6 m/s at some instant. (a) What is the…

A: Given, mass of ship, m=7 x 107 kg Speed at some instant, v=10.6 m/s

Q: If you drop a 13.0kg ball from a height of 30m (neglect friction). a. How many Joules of Potential…

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Q: A skier of mass 70 kg is pulled up a slope by a motor driven cable. A.) How much work is required to…

A: Given that             The mass of the skier is(m) = 70Kg. Since he is moving upward with constant…

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 30 hp are required to drive a 1200 kg automobile at 50 km/hr on a level road, what is the…

A: Given: The power required is 30 hp. The mass is 1200 kg. The speed is 50 km/h.

Q: How much work must a spring with a constant of 8.3 x 104 N/m do to stop a 1,520-kg vehicle traveling…

A: Given  spring constant (k)=8.3 x 104 N/m mass of vehicle(m)=1520 kg initial speed of vehicle(vi)=110…

Q: A 50.0 - kg projectile is fired at an angle of 30.0° above the horizontalwith an initial speed of…

A: (a) Write the expression for initial mechanical energy

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 large cruise ship of mass 6.50x107 kg has a velocity of 12.0 m/s. a) What is the ship’s kinetic…

A: According To Newton's second law of motion, the net force acting on a particle is the product of the…

Q: A skier of mass 75 kg is pulled up a slope by a motor-driven cable. (a) How much work is required to…

A: Given:Mass of the skier = 75 kg

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

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Q: A man of mass 80 kg runs up a flight of stairs 20 m high in 10 s. (a) how much power is used to lift…

A: Given: Mass of the man m = 80 kg Height of the stairs = 20m Time taken t = 10 seconds

Q: A block with mass m = 2,5 (kg] slides head-on to a spring with spring constant k = 320 [N/m). When…

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Q: A large cruise ship of mass 6.60 ✕ 107 kg has a speed of 10.6 m/s at some instant. (a) What is the…

A: mass, m = 6.6 ✕ 107 kg speed, v =  10.6 m/s displacement, s = 2.6 km = 2600 m

Q: (II) A 1.60-m-tall person lifts a 1.65-kg book off the groundso it is 2.20 m above the ground. What…

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Q: R T T2 M1 = 10 kg M2 = 6 kg 8 m How much work is done by mass 1? b. How much work is done by mass 2?…

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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 76-kg tourist starts from rest at the top of a 12.0 m long water slide that is inclined 65° with…

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Q: A cyclist starts from rest and coasts down a 4.0° hill. The mass of the cyclist plus bicycle is 85…

A: mass of cyclist plus bicycle , m = 85 kg angle of inclination  of hill , θ' = 4o distance traveled…

Q: A large cruise ship of mass 6.50 × 107  kg has a speed of 12.0 m/s at some instant. (a) What is the…

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Q: A 75.0-kg cross-country skier is climbing a 3.0º slope at a constant speed of 2.00 m/s and…

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Q: cheetahs, the fastest of the great cats, have a mass of about 70 kg and have been clocked running at…

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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? (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: A sprinter who weighs 670 N runs the first 7.0 m of a race in 1.6 s, starting from rest and…

A: weight of sprinter, W = 670 N  initial velocity of the sprinter, u = 0 m/s  time, t = 1.6 s…

Q: A huge cruiser with a mass of 6.50x107 kg has a velocity of 12 m/s in a instant. A. What is the…

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Q: A sprinter who weighs 639 N runs the first 8.6 m of a race in 1.9 s, starting from rest and…

A: Given quantities, Mass of sprinter = 639N time for first 8.6m = 1.9s  Initial velocity = 0 a) Using…

Q: e A grandfather clock is powered by thedescent of a 4.35-kg weight. (a) If the weight descends…

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Q: a) If 30 hp are required to drive a 1200 kg automobile at 50 km/hr on a level road, what is the…

A: Given: The power is P=30 hp. The velocity is v=50 km/h. The expression for total force (F) is:…

Q: HI, please see attached image for question.

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Q: A 2kg mass falls 4m.a.How much work was done on it by the gravitational force? b.How much…

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Q: d) What is the applied force when the spring is compressed? e) What is the kinetic energy of the…

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Q: (a) What is the average useful power output (in W) of a person who does 6.80 x 106 J of useful work…

A: Given data The useful work done is: W = 6.80 x 106 J The duration of the work is t = 8.40 h = 30240…

Q: (a) What is the power output in watts and horsepower of a 70.0-kg sprinter who accelerates from rest…

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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 skier of mass 79 kg is pulled up a slope by a motor-driven cable. (a) How much work is required to…

A: Given information:Mass of the skier (m) = 79 kgSlope of the cable (θ) = 300Distance he has to be…

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…

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.