A small motor runs a lift that raises a load of bricks weighing836 N to a height of 10.7 m in 23.2 s. Assuming that the bricks arelifted with constant speed, what is the minimum power the motormust produce?

Q: In a time t=17.00 s, a 66.0-kg student runs at a steady pace up two flights of stairs whose combined…

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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 weighlifter lifts a 50-kg barbell a vertical height of 2.0 m in 5.0 s. What is the average power…

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Q: 3An elevator lifts a load of mass 10 kg a distance of 50m in 14 s. Find the work done and the power…

A: Given Data : The mass that the elevator lifts is given as m = 10 Kg. The height by which the load is…

Q: If your mother ask you to lift a 1 sack of rice and bring it home with a speed of 10km/hr for…

A: Work is said to be done when force applied on an object produces motion in  the object in the…

Q: A 72.3 kg student runs up the stairs of a football stadium to a height of 11.1 m above the ground in…

A: Power is defined as the Work Done or Energy per unit time.P=Et The energy of an object of mass m at…

Q: An 80-kg jogger that is initially running at 5.0 m/s uniformly accelerates to 8.0 m/s in a time of…

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Q: If you pull a wagon with the force of 200 N and it takes you 20 seconds to pull it 10 m on flat…

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Q: What average power is needed to accelerate a 1 kg soccer ball from rest to 36 km/hr in 0.1 seconds?…

A: Given data: Mass (m) = 1 kg Initial velocity (v0) = 0 m/s Final velocity (v) = 36 km/hr Time (t) =…

Q: A 2000kg car accelerates to 20 m/s.  If the car can do this in 10 seconds, what was the average…

A: Given: Mass of car (m) = 2000 kg Final velocity of car (v) = 20 m/s Time taken to achieve final…

Q: A car could accelerate from rest to 60 mi/hr (27 m/sec) using a 302 V8 in a time of 1.2 sec.  If the…

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Q: A jet engine develops 10^5 N of thrust in moving an airplane forward at a speed of 900 km/hr. What…

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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: You do 6.5 J of work to stretch a spring with k = 210 N/m, starting with the spring unstretched.

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Q: It takes 157 kJ of work to accelerate a car from 23.4 m/s to 27.3 m/s. What is the car's mass?

A: Given, Work done, W=157 kJ Initial velocity, u=23.4 m/s Final velocity, v=27.3 m/s

Q: If a ski lift raises 100 passengers averaging 660 N in weight to a height of 150 m in 60.0 s, at…

A: Given information: Here, mg is the average weight of the passenger, h is the height attained by the…

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: A cyclist in a race must climb a 4° hill at a speed of 5 m/s. If the mass of the bike and the biker…

A: The mass of the bike and the biker together, m=73 kg   The speed, v=5 m/s   The angle, θ=4°

Q: A warehouse worker uses a forklift to raise a crate of pickles on a platform to a height 3.75 m…

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Q: In climbing up a rope, a 62-kg athlete climbs a vertical distance of 5.0 m in 9.0 s. What minimum…

A: Given Data: The mass of an athlete is m=62 kg The vertical distance is, d=5 m The time required to…

Q: Suppose a 925-kg car climbs a 2.05° slope at a constant speed of 30.5 m/s.   Calculate the power…

A: Since, the car climbs the slope with a constant velocity, the expression for the power required is,

Q: A warehouse worker uses a forklift to lift a crate of pickles on a platform to a height 3.75 m above…

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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: A boy of mass 45 kg climbs a vertical rope 9 meters in length in 15 seconds with constant velocity.…

A: Given: The mass of the object is 45 kg. The vertical height is 9 m. The time interval is 15 s.

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

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Q: A 1000-kg car accelerates from 0 to 15 m/s in 5.0 s with negligible friction and air resistance.…

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Q: metres and the velocity is 10.3 m/s. What is the kinetic energy (in J) of the rocket at this…

A: The answer is below

Q: Suppose Elisha is moving a 30-kg box of books. Compute for her power output in the following…

A: Given: Mass of box of books that Elisha is moving, m=30 Kg To determine power output  a. She exerts…

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: You're riding a toboggan down an icy run to a frozen lake, and you accelerate the 80.0-kg…

A: Given : m=80kg u=1m/s v=2m/s t=2s

Q: A car's engine generates 80000 W of power as it exerts a force of 6000 N. How long does it take the…

A: Given: The power of the engine is 80000 W. The force exerted by the engine is 6000 N. The…

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 man can manage a power output of 180. How long will it take him to lift the a 40 kg box to a…

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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: 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 farmer uses a tractor to pull a 110 kg bale of hay up a 15∘ incline to the barn at a steady 5.0…

A: The components of weight into the perpendicular and parallel to the slope are Fparallel=mgsinθ=110…

Q: What average power is required for a runner with a mass of 80 kg to reach a speed of 9 m/s during a…

A: Solution: Given that m = 80 kg v = 9 m/s t = 2 s

Q: A car generating a power of (93670.06)watts is traveling on a road with a coefficient of kinetic…

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Q: A woman uses a pulley and a rope to raise a 20 kg weight to a height of 2 m. If it takes 4 s to do…

A: mass, m = 20 kg  height, h = 2 m  time, t = 4s  The formula for energy is  E = m g h  The power is…

Q: A man pushes a mower on a level lawn with a force of 155 N over a horizontal distance 7.2 m in 8.0s.…

A: Given data The force is given as F = 155 N. The horizontal distance is given as d = 7.2 m. The time…

Q: A boy of mass 35 kg climbs a vertical rope 10 meters in length in 12 seconds with constant velocity.…

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Q: A weightlifter raises a 150-kg barbell from the floor to a height of 2.2 m in 0.80 s. What is his…

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Q: A rocket sled having a mass of 1,501 kg reaches a speed of 352 m in 9.5 seconds. What average power…

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