If you pull a wagon with the force of 200 N and it takes you 20 seconds to pull it 10 m on flat ground how much power have you expended?

Q: A man pushes a lawn mower on a level lawn with a force of 213 N. If 53% of this force is directed…

A:

Q: A man pushes a lawn mower on a level lawn with a force of 201 N. If 44% of this force is directed…

A: Given Data: The force with which the man pushes the lawn mover is given as f = 201N. The percentage…

Q: Lifing a weight to a height of 20 m takes 20 s for one crane and 10 s for another. Is there any…

A: The expression for work done (W) is given as: W=w×h Here, w is the weight, and h is the height.

Q: A man pulls a 6 kg luggage along a level road for 12 m exerting a force of 15 N at an angle of 20…

A:

Q: what is the power of a crane that lifts it uniformly in a hurry to a height of 5 meters during 5…

A: The work done is calculated as, W=mghW=200×9.8×5W=9800 J

Q: Your gasoline engine has a limited supply of gasoline, able to do 5000 J of work. If you weigh 800…

A:

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…

A:

Q: An electric motor raises an elevator weighing 1.20 x N a distance of 9 m in 15 s. What is the power…

A:

Q: A crane lifts a 320 kg crate up a height of 4.5 m. The crane has a power rating of 2000 W. How much…

A: Given data The mass of the crate is given as m = 320 kg. The height up to which the crate lifts is…

Q: m above

A:

Q: Your job is to lift 30-kg crates a vertical distance of 0.90 m from the ground onto the bed of a…

A:

Q: Calculate the work done in lifting a 300 N weight to a height of 10 m with an acceleration 0.5 ms.…

A:

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

A:

Q: The work you do when pushing a shopping cart twice as far while applying the same force is A) half…

A: Given data:  New displacement (d') = 2d New force (F') = F Required: New work done

Q: A boy of mass 40 kg climbs a vertical rope 8 meters in length in 12 seconds with constant velocity.…

A: Mass of boy= 40 Kg Time = 12 s Height gain= 8 m

Q: A man pushes a lawn mower on a level lawn with a force of 200 N. If 31% of this force is directed…

A: Given: The force F = 200 N. The power P = 63 W. The distance d = 4.7 m.

Q: A particular machine is capable of power of 2000 watts. How far can it lift a 70 newton weight in 4…

A:

Q: A girl with 40kg mass is riding an 8 kg bicycle. At the top of the hill her speed is 6.0 m/s, and…

A:

Q: How many watts of power do you expend when you exert a force of 1 N that moves a book 2 m in a time…

A: The power exerted on the book can be given by

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: An automobile has a power output of 100 hp. When it pulls a cart with a force of 300N, what is the…

A: Answer:-  Given  Power (P) = 100 hp        (1hp = 746 watt)   P = 100 × 746 watt  P = 74600 watt…

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

A:

Q: Ahmed carrying a weight of 50 N walks a distance of 2m as shown in figure. The work done by him is…

A:

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 crane operating with power of 1225 W needs to lift a 500 kg mass to height of 30 m. About how ong…

A: Given:- mass of the object m= 500 kg  height h = 30 m  The power P =1225 W  Find:- how long will it…

Q: A 5 N monkey is attached to a 20 m hanging rope that weighs 0.3 N/m. The rope is pulled up to the…

A:

Q: You (50 kg) wanted to climb a slope (50) with a speed of 15 m/s. How much power do you need? Assume…

A:

Q: How much work is done by a powerlifter that pushes a car with a force of 800N at a distance of 200 m

A:

Q: A dog races up the stairs in a time of 1.80 seconds.  If the stairs are 12 feet high, how much power…

A:

Q: if you pull a wagon with a force of 200 Newton's and it takes you 20 seconds to pull it 10 meters of…

A:

Q: Wonder Woman uses 2000 N to lift a truck 2.3 meters in 5 seconds. How much power did she use?

A: We know that power  P= W/t Where W is work done and t is time

Q: Show that about 786 W of power is expended when a 500-N barbell is lifted 2.2 m above the floor in…

A: The expression for the power is,

Q: A man pushes very hard for several seconds on a heavy rock, but the rock does not budge. Has the man…

A: To determine Work done by the man

Q: The work you do when pushing a shopping cart twice as far while applying double the force is A)…

A:

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

A:

Q: You push a heavy box along the floor with a force of 775 N for a distance of 15 meters.  The…

A:

Q: Determine the work done in lifting a 50-pound object 4 feet.

A:

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 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: Suppose you expend 1000 J of energy running up the stairs for 20 seconds. How much power did you…

A: Given value --- expand energy = 1000 J. time = 20 sec. We have to find---  How much power did you…

Q: What is the power demonstrated by a weightlifter when lifting a 420 kg barbell 1.4 meters in 0.65…

A:

Q: A child pulls a sled (mass 8.00 kg ) over a distance of 20.0 m [West] by applying a force of 30.0 N…

A:

Q: While cruising along a level ground in a one horse open sleigh at 4.0 m/s, Santa cracks the whip and…

A: