A 2000kg car accelerates to 20 m/s.  If the car can do this in 10 seconds, what was the average power rating of the car during the acceleration?

Q: It takes 165 k] of work to accelerate a car from 21.0 m/s to 27.5 m/s. What is the car's mass? kg

A: Given data The work required is given as W = 165 kJ. The initial velocity is given as u = 21 m/s.…

Q: A 1,505 kg car starts at rest and speeds up to 4.2 m/s with a constant acceleration. If the car…

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Q: Atruk has an engine power of 50 kN, what the power that makes the truck speed 80 km? O 2.11 Mw 1.21…

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Q: A forklift applies 2020 N of force to lift items a distance of 2.5 m in 2.8 s. What is the power…

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Q: A 95 kg man runs up a 20 m high stairs at a constant speed. If it takes him 8 seconds to reach the…

A: The rate  of doing work is called power.

Q: A person pulled a 5.0-kg water bucket from the well with a height of 5.0 m in 15 s. What is the…

A: Power = work÷time Here, work = change in potential energy = mgH -0 ( ere we have taken bottom most…

Q: A 1,000 kg sports car accelerates from 0 to 30 m/s in 13 s.  What is the average power of the…

A: Mass of the car,(m)=1000 kg ----(1) [Given] The initial velocity of the car,(vi)=0 m/sec ----(2)…

Q: How much power does it take to lift a 49kg person a 5m vertical distance in 20s?

A: Given: mass, m = 49 kg  height, h = 5 m  time, t = 20 s

Q: A unit of power often for electric motors is the horsepower (hp), which equals 746 W. a small…

A: In the given question, We have to determine the energy delivered by the motor in one hour.

Q: a 1000 kg sports car accelerates from zero to 25m/s in 7.5 seconds. What is the average power…

A: Mass, m = 1000 kgInitial velocity, u = 0 m/sFinal velocity, v = 25 m/sTime, t = 7.5 s

Q: A 75kg- bicyclist starts from rest at the top of a hill and rolls down the hill without pedaling.…

A: Write the value of height of the hill.   h=49 m   Here, the initial speed of the bicyclist is zero…

Q: I push a block along the floor for 10 seconds at a constant velocity of 2 m/s, using a force of 100…

A:

Q: A man, whose mass is 56kg, uses a skateboard with a mass of 3kg to travel from his home to the park.…

A: Given data: Mass of man (m1) = 56 kg Mass of skateboard (m2) = 3 kg Initial velocity (v0) = 4.5 m/s…

Q: A 950 kg car accelerates from rest with a constant power of 145 hp. Neglecting air resistance, what…

A: The power is given by, P=145 hpP=145 hp745.7 W1 hpP=108,126 W The energy gained in 5 s is,…

Q: How much power will a 260 N student develop if he/she climbs a flight of stairs 12 m from the ground…

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Q: A top fuel dragster with a mass of 600.0 kg starts from rest and completes a quarter mile (402 m)…

A: Given data- A top fuel dragster with a mass m=600.0 kg initial velocity Vi=0 m/s (rest) final…

Q: A 70 kg person runs up a staircase 3.0 m high in 3.5 s.  How much horsepower does he develop in…

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Q: A cart which has a mass of 20 kilograms slides down a frictionless slope of a hill. If the cart…

A: Given value--- mass = 20 kg. speed at bottom = 15.6 m/s. We have to find --- height?

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: An 190,000 W engine can accelerate from rest to a top speed in 9 s. How much work did the engine do?

A: We know that Work = (power)*(time)

Q: A race car travelling on a straight and flat stretch of track must overcome 1.5 kN of resistance to…

A: Given : F = 1.5 kN = 1.5 x 103 N v = 190 km/hr = 190 x 1000/3600 = 52.78 m/s

Q: a 75.8 kg person runs up a flight of stairs having a rise of 5.3 m in a time of 4.5 s. What average…

A: Given data: Mass (m) = 75.8 kg Height (h) = 5.3 m Time (t) = 4.5 s Required: The average power (P)

Q: A 50 kg sprinter accelerates from 0 to 11 m/s in 3.0 s. What is the output power for this rapid…

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Q: How much time is required for a elevator to lift a 2000 kg load up 28 m from the ground level, if…

A: Given data: Mass m = 2000 kg Distance from ground level d = 28 m Power P = 13 kW

Q: An engine reaches its top speed from rest in 7.5 s. It is able to perform 250,000 J of work in that…

A: Given data: Given problem based on work and power. Time during which work is done, t= 7.5 sec Work…

Q: power

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

Q: A 75 kg student runs up the stadium stairs for a distance of 15.00 m in 5.0 seconds. How much power…

A: mass = m = 75 kg height = h = 15 m time = t = 5 sec

Q: What is the average power must produce to accelerate car with 1500 kg from rest to the speed 30…

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Q: A compact car can climb a hill in 10s. The top of the hill is 30m higher than the bottom, and the…

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Q: 1000 kg car requires eight seconds to change its speed from 0 km/h to 140 km/h. What is the powered…

A: mass of car= 1000 Kg time= 8 sec

Q: A 100 kg weightlifter performs a lift called a clean and jerk, raising a 190 kg bar from the ground…

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Q: An elevator has a mass of 4500 kg and can carry a maximum load of 1800 kg. At full load, it is…

A:

Q: A 95 kg man runs up a 20 m high stairs at a constant speed. If it takes him 8 seconds to reach the…

A: Given The mass of the man is m=95 kg. The height of the stairs is h=20 m. The time is taken by the…

Q: A 715-N Marine in basic training climbs a 10.5-m vertical rope at a constant speed in 6.00 s. What…

A:

Q: 450 kg racecar can go from 0 to 60 km/h in 10.0 s. What is the average 6. power is required to do…

A: Dear student The change in potential energy between two horizontal levels is defined as : ∆U = mgh…

Q: A truck weighing 3.0 x 10^4 newtons was driven up a hill that is 1.6 x 10^3 meters long to anarea…

A: Weight of the truck  W = 3×104 N The weight is a measure of the force of gravity acting on the…

Q: A 685-N Marine in basic training climbs a 8.0-m vertical rope at a constant speed in 8.50 s. What is…

A: Weight, W = 685 N Height, h = 8 m  Time, t = 8.50 s   Power, P = Work/Time or P = Wh/t or P = 685 x…

Q: Using 1000. J of work, a small object is lifted from the ground floor to the third floor of a tall…

A: Given parameter                        Work(W) = 1000J                        Time (T) = 20s

Q: A bowler accelerates a 8.5 kg bowling pin from rest to 15 m/s. If this motion takes 1.75 s, what is…

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Q: A crane lifts a load of 6000 N through a vertical distance of 15 m in 30 s.What is the average…

A:

Q: A motor has a power output of 1000 W.  How fast would this motor lift a 20 kg mass to a height of 10…

A: Motor would lift 20kg to height of 10m in 1.96 seconds

Q: A 1200-kg sports car is advertised to accelerate from 0-100 km/h (27.78 m/s) in 3.00 s. What is the…

A: Solution

Q: A railroad locomotive accelerates a 95,000-kg railcar from 10 m/s to 25 m/s in 90 seconds. What was…

A: The initial velocity u=10 m/s The final velocity v=25 m/s Mass of the locomotive m=95000 kg The…

Q: A 2000 kg car can accelerate from rest to 50 m/s in 4.2 seconds. How much power does the engine…

A: The initial speed of a car is, u=0 m/s The final speed of a car is, v=50 m/s The car's mass is,…

Q: How much power is needed to accelerate a 1250 kg sports car from rest to 25 m/s in 4.5 seconds?

A:

Q: A 50kg student traveling in a car with a constant velocity has a kinetic energy of 1.2 × 10^4J .What…

A: Given information: The mass of the student (m) = 50 kg The kinetic energy of the student (K.E) = 1.2…

Q: A 1 000-kg sports car accelerates from zero to 25 m/s in 7.0 s. What is the average power delivered…

A: The expression for velocity is,

Q: A 78 kg student runs up the stairs of a football stadium to a height of 12.5 m above the ground in…

A: Given : mass of the student, m=78 Kg height, h=12.5 m time taken to climb, t=15 s   Power : Power is…