# Physics

Zak, helping his mother rearrange the furni- ture in their living room, moves a 48.9 kg sofa 3.3 m with a constant force of 21 N.
What is the work done by Zak on the sofa? Neglect friction.

1. 👍 0
2. 👎 0
3. 👁 421
1. Friction or not, the work done is
W = F.D (scalar product)
If force is applied in the same direction as the displacement, then work done is simply the product of the magnitude of the force and the distance travelled, namely
W= 21N*3.3m
= 69.3 J

1. 👍 0
2. 👎 0

## Similar Questions

1. ### physics

Zak, helping his mother rearrange the furni- ture in their living room, moves a 59 kg sofa 2 . 6 m with a constant force of 36 N. What is the work done by Zak on the sofa?

asked by Spencer on September 26, 2013
2. ### physics

Zak, helping his mother rearrange the furni- ture in their living room, moves a 59 kg sofa 2 . 6 m with a constant force of 36 N. What is the work done by Zak on the sofa?

asked by Spencer on September 26, 2013
3. ### physics

Zak, helping his mother rearrange the furniture in their living room, moves a 49.9 kg sofa 7.1 m with a constant force of 37 N. What is the work done by Zak on the sofa? Neglect friction. Answer in units of J

asked by LYNN on September 27, 2012
4. ### Physics

Zak, helping his mother rearrange the furniture in their living room, moves a 42.3 kg sofa 7.2 m with a constant force of 17 N. A. What is the work done by Zak on the sofa? Neglect friction. Answer in units of J. B. What is the

asked by Sam on February 29, 2016
5. ### Physics

Zak, helping his mother rearrange the furniture in their living room, moves a 58.3 kg sofa 7.7 m with a constant force of 25 N. What is the work done by Zak on the sofa? Neglect friction. Answer in units of J. What is the average

asked by monica :) on March 10, 2015
1. ### physics

QA: This question is typical on some driverâ€™s license exams: A car moving at 40 km/h skids 12 m with locked brakes. How far will the car skid with locked brakes at 80 km/h? Answer in units of m QB:A cheerleader lifts his 62.2 kg

asked by LYNN on September 27, 2012
2. ### math

jim wants to place carpet in his living room.the dimensions of his living room are 15 3/4 feet by 18 1/8 feet.aprocimately how many square feet of carpet does he need to cover his living room????thanks for helping

asked by jenny on October 9, 2010
3. ### English

Identify the correct sentence. A. The rest of the toys on the floor in the living room needs to be picked up before your mother comes home. B. The rest of the toys on the floor in the living room need to be picked up before your

asked by Susan on May 13, 2014
4. ### English

1. Her mother got out of the room. 2. Her mother went out of the room. 3. Her mother walked out of the room. 4. Her mother got into the room. 5. Her mother went into the room. 6. Her mother walked into the room. 7. Her mother got

asked by rfvv on November 9, 2017
5. ### math

consuelo's living room is in the shape of a rectangle and has an area of 360 square feet. the width of the living room is 5/8 its length. what is the length of the living room

asked by cristina on January 30, 2015

More Similar Questions