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. how much power does he expend?

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

A:

Q: A cyclist in a race must climb a 5° hill at a speed of 8 m/s. If the mass of the bike and the biker…

A: Given: The angle of inclination of the hill = 50 Speed of the cyclist = 8 m/s Mass of the bike and…

Q: A force of F = 159 N pulls a mass of 15 kg a distance of x = 4.8 m. How much work is done by the…

A:

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: If you exert a force of 64 N to walk 12 m a flight of stairs in 15 seconds, how much power do you…

A: Given: force F =64 N Distance travelled d = 12 m time taken t =15 sec

Q: A 65-kg woman runs up a flight of stairs in 10.0 s. Her net upward displacement is 3.0 m.…

A:

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

A:

Q: A student weighing 400 N climbs a flight of stairs 2 m high in 6 s. What power in watts is required…

A:

Q: In scaling a vertical wall, spiderman needs 3.1 kW of power to maintain a speed of 4.5 m/s. If…

A:

Q: If a small motor does 500 J of work to move a toy car 250 m, what force does it exert?

A: Work Done ( W ) = Force (F) * Distance moved (D) where W is in J ( Joules) F is in N (Newtons) and D…

Q: A force 50 N is required to maintain a spring stretched from its natural length 9 cm to a length of…

A:

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

A:

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

A:

Q: How far must a 50 N force need to push an object to do 10 J of work? Your answer: 0.2 m 5 m 40 m 60…

A: Here given a force of 50 N. The workdone is 10 J.We have to calculate the distance covered by that…

Q: How much work is done lifting a 100 N barbell vertically 0.5 m?

A: The workdone in lifting a 100 N barbell vertically 0.5 m. given,Force(F)=100 Nheight(h) moved=0.5 m

Q: Suppose your mass is 83.5 kg and you climb 40 stairs of height 18 cm in 16.0 s. What is your power…

A: (given)                             Mass = 83.5 kg                           Total distance =…

Q: A 56.5-kg person is running and accelerates from 3.67 m/s to 8.29 m/s in 5.67 s. How much power does…

A:

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: 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: In 1.62 minutes, a ski lift raises four skiers at constant speed to a height of 146 m. The average…

A: Given information: Here, m is the mass of each ski, h is the height up to which skies are raised in…

Q: How much work is done when a hoist lifts a 260-kg rock to a height of 7 m? (Use 9.8 m/s2 for the…

A:

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: A person weighing 233 N climbs a flight of stairs 6.0 m high in 6.0 s. What power is required to…

A:

Q: A girl pushes her little brother on his sled with a force of 300 N and does work of 600 J. How far…

A: Given  Girl pushes his brother with the force F = 300 N. Work Done W = 600 J We know the expression…

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

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: What is your average power if you lift a 36.1 kg box at a constant speed to a height of 1.31 m in…

A: Calculate the work required for the to lift the mass. W = increase in potential energy of the mass…

Q: In a training, you are doing a vertical climb using a rope to lift yourself by 5.0 m in 2 s. If you…

A: Given data: Height (h) = 5.0 m Time (t) = 2 s Mass (m) = 55 kg Required: Work done (W) and Power…

Q: What is the average power needed to move a 1000 kg car from rest in 7 seconds at a rate of 4 m/s^2?

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 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 man pushes a lawn mower on a level lawn with a force of 194 N. If 49% of this force is directed…

A: Consider a man applied force F on a lawnmower and it displaces by a distance d.

Q: What is the average power supplied by a 60 kg person running up a flight of stairs a vertical…

A: The person’s average power can be determined as, Here, W and t represent the work done and the…

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

A: Given : m = 35 kg h = 10 m t = 12 seconds

Q: How much power does it take for a 60 kg person to run up stairs at a rate of 2.5 steps per second if…

A: Given data:  Mass (m) = 60 kg Time (t) = 1 s Number of steps rup up in 1 second = 2.5 Height of each…

Q: A medical student pushes a 30-kg carton of books across the floor of her dormitory at constant speed…

A:

Q: How much force is exerted by the Soccer player in pushing the ball to the goal, having the work done…

A: Given data The work done by the soccer player is given as W = 75 J. The distance covered by the ball…

Q: How much power is required to raise a 30-kg crate a vertical distance of 6m in a time of 4 seconds?…

A: The potential energy of a body is given by PE = mgh, where m = the mass of the body g = acceleration…

Q: How much work is done when a hoist lifts a 290-kg rock to a height of 5 m? (Use 9.8 m/s2 for the…

A:

Q: How much work does it take to lift a 30.0 N bag 10.0 m high in 5.00 s?

A:

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

A:

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…

A: