How long will it take a 844-kg car with a useful power output of 48.5 hp (1 hp equals 746 W) to reach a speed of 14.7 m/s, neglecting friction? Give your answer in seconds and to 1 decimal place: A. 2.5 s B. 3.1 s C. 1.7 s D. None of the choices

Q: A truck pushes a pile of dirt horizontally on a frictionless road with a net force of 20.5 N for…

A: Given data:  Force (F) = 20.5 N Displacement (d) = 23.6 m Required: The increase in kinetic energy

Q: A young boy is riding a bicycle that has a total mass (including the kid) of 27.6 kg. The boy is…

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Q: 32. A skier leaves a ski jump at 15.0 m/s at some angle. At what speed is he traveling at his…

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

Q: It takes 179 kJ of work to accelerate a car from 21.0 m/s to 29.7 m/s. What is the car's mass?…

A: Given, Initial speed of the car, vi = 21.0 msfinal speed of the car, vf = 29.7 mswork done to…

Q: If a 1300 kg car can accelerate from 30 km/h to 60 km/h in 3.9 s , how long will it take to…

A:

Q: 9. Elena and her classmates were attempting to measure the maximum power they can generate by…

A: mass of Elena = 55 kg height = 4 m time = 3.5 seconds a) Work done by Elena = mgh = 55 * 9.8 * 4  =…

Q: 2. A 1.0 kg particle is moving at a speed of 4.0 m/s at t = 0 s. The kinetic energy of the particle…

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Q: 7. 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…

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Q: A 60 HP electric motor lifts an elevator with a maximum total load capacity of 2000 kg. If the…

A: Given Data:  F=4000 N M=2000 kg g=10 m/sec2 P=60 HP 1HP=746 W

Q: What average power does a 1,565 kg car need to go from 0 to 12.6 m/s in 6.86 seconds? Assume a…

A:

Q: body having 7 kg of mass moves slowly and covers a vertical height of 14 m. What is the work done in…

A: Given: m = 7 kg h =14 m g = 10m/s2

Q: If a 50 kg object initially at rest is displaced 25 m by a constant net force of 600 N in the…

A: Given: Mass of the object, m = 50 kg Displacement, S = 25 m  Force, F = 600 N  Initial velocity of…

Q: Two people of the same mass climb the same set of stairs . Person A climbs the stairs in 25s. Person…

A: Since both the persons have to climb the same set of stairs, the work done by both the persons is…

Q: An 860 N box is pushed across a level floor for a distance of 4.2 m with a force of 420 N. How much…

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Q: How long will it take a 742-kg car with a useful power output of 43.2 hp (1 hp equals 746 W) to…

A: Mass of car (M) = 742 kg  Output power of car = 43.2 hp  Power (P) = 43.2(746W) = 32227.2 W  Speed…

Q: A 213 kg crate slides 7.6 m until coming to a stop after being pushed by a large man. The effective…

A: Given data: Mass (m) = 213 kg Displacement (d) = 7.6 m Coefficient of kinetic friction (μk) = 0.37…

Q: 2. A certain 1500.0 kg fancy sports car can accelerate from rest to 30.0 m/s over a distance of 40.0…

A: Given, Mass of car (m) = 1500 kg  Initial speed of car(u) = 0 m/s   Final speed of car (v)= 30m/s…

Q: An advertisement for a portable electrical generating unit claims that the unit’s diesel engine…

A: The power of the diesel engine is 28000 hp, it is required to convert horse power to watt.       1…

Q: How long will it take a 921-kg car with a useful power output of 57.6 hp (1 hp equals 746 W) to…

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Q: SI unit of power is the Watt (W).

A: This question is based on Unit dimensions .

Q: A horse is pulling a sled at a velocity of 3.5 m/s. If the horse's power output is 250 W, what is…

A: Given data:  Velocity (v) = 3.5 m/s Power (P) = 250 W Required: Force (F)

Q: A 2 kg mass is released at the top of a frictionless slide that is 3 m height. What is the kinetic…

A: Given data:  Mass (m) = 2 kg Initial velocity (u) = 0 m/s Height (h) = 3 m Required: The kinetic…

Q: Suppose a 75-kg sprinter accelerates from rest to 12 m/s in 3.15 s. 1. What is the power output, in…

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Q: The power output (in W) needed from a motor to lift a mass of 1.5 x 104 Kg, 25 m in 6.0 s at…

A: The mass is The displacement of the mass is The lifting time is

Q: How long will it take a 751-kg car with a useful power output of 57.5 hp (1 hp equals 746 W) to…

A:

Q: A 4 kg ball falls from height of 29. What willbe potential energy of the ball after 1 second? Use g=…

A: Given that:- mass, m = 4 kg height, h = 29 m time, t = 1 sec

Q: Find the work done in joules by gravity as an object of the mass m=8 kg is raised up at constant…

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Q: Final Y = (3 m)sin 37° y= 15 ms X-0 K; + , + U + W - K, + g,* y + AEtbem Initial m= 60 kg X- 3,0 m…

A: Mass = 60 kg  Initial compression = 3 m  Final launch speed = 15 m/s

Q: Why is it tiring to push hard against a solid wall even if no work is done? A 75 kg firefighter…

A: Q 1) We get tired because we use our energy to contract the muscles. We try to push the wall using…

Q: A car (m=1000 kg) is initially moving at a speed of 20 m/s (~45 mph) when the driver hits the brakes…

A: Work done is equal to change in kinetic energy W=∆EK=12mvf2-vi2=121000 kg0-20 ms2=-200000 J=-200 kJ

Q: power

A: Given: Mass of the dragster = 650 Kg initial speed = 0 final speed = 110 m/s Distance= 400 m…

Q: Calculate the work done in lifting 359 Kg bag,  2.7 meters above the floor on earth. ( g = 9.81…

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Q: If 39000 J of work is done on a 520 kg object to accelerate it from rest, then use the Work-Energy…

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Q: If a 1300 kg car can accelerate from 30 km/h to 60 km/h in 3.9 s , how long will it take to…

A: Mass of car, m = 1300 kg Velocities are,  v1 = 30 km/h = 30*(1000m/3600s) => v1 = 8.33 m/s v2 =…