# A person pushes a 17.0 kg lawn mower at constant speed with a force of 74.0 N directed along the handle, which is at an angle of è = 48.0° to the horizontal (b) Calculate the horizontal retarding force on

63,703 results
1. ## physics

A person pushes a 14.0-kg lawn mower at constant speed with a force of F = 88.0 N directed along the handle, which is at an angle of 45.0º to the horizontal (Fig. 4–45). (a) Draw the free-body diagram showing all forces acting on the mower. Calculate

asked by mrmr on January 19, 2011
2. ## Physics

A person pushes a 11.0 kg lawn mower at constant speed with a force of 76.0 N directed along the handle, which is at an angle of è = 41.0° to the horizontal. Calculate the normal force exerted vertically upward on the mower by the ground. Calculate the

asked by Leah on November 28, 2011
3. ## physics - forces

A person pushes a 16.0 kg lawn mower at constant speed with a force of 70.0 N directed along the handle, which is at an angle of è = 45.0° to the horizontal. Calculate the force the person must exert on the lawn mower to accelerate it from rest to 1.2

asked by DJ on October 8, 2009
4. ## physics

A person pushes a 17.0 kg lawn mower at constant speed with a force of 74.0 N directed along the handle, which is at an angle of è = 48.0° to the horizontal (b) Calculate the horizontal retarding force on the mower (c) Calculate the normal force exerted

asked by kayla on February 2, 2012
5. ## Ap physics

A person pushes a 15.0 kg lawn mower at constant speed with a force of 77.0 N directed along the handle, which is at an angle of θ = 49.0° to the horizontal . (a) Draw the free-body diagram showing all forces acting on the mower. (Do this on paper. Your

asked by rayray on September 10, 2010
6. ## physics

A person pushes a 11.0 kg lawn mower at constant speed with a force of 82.0 N directed along the handle, which is at an angle of θ = 45.0° to the horizontal.Calculate the normal force exerted vertically upward on the mower by the ground.

asked by Anonymous on November 5, 2010

A boy pushes a lawn mower with a mas of 17.9 kg starting from rest across a horizontal lawn by applying a force of 32.9N straight along the handle, which is inclined at an agle of 35.1 degrees above the horizontal. The magnitude of the mower's

asked by HR on October 12, 2008
8. ## physics

A person pushes a 10.0 kg lawn mower at constant speed with a force of 70.0 N directed along the handle, which is at an angle of è = 46.0° to the horizontal

asked by chuck on October 29, 2011
9. ## physics

A woman pushes a lawn mower with a con- stant force of 112 Newtons at an angle of 37 with respect to the horizontal. The lawn mower moves at a speed of 20 cm/sec. What is her power output? (1 hp = 746 Watts)

asked by ally on February 25, 2011
10. ## Physics

A woman pushes a lawn mower with a con- stant force of 112 Newtons at an angle of 37degrees with respect to the horizontal. The lawn mower moves at a speed of 20 cm/sec. What is her power output? (1 hp = 746 Watts)

asked by James on February 27, 2011
11. ## physics

A woman pushes a lawn mower with a con- stant force of 112 Newtons at an angle of 37 with respect to the horizontal. The lawn mower moves at a speed of 20 cm/sec. What is her power output? (1 hp = 746 Watts) 1. 0.040 hp 2. 0.024 hp 3. 0.034 hp 4. 0.020 hp

asked by erika on February 25, 2011
12. ## physics

A man pushes a lawn mower on a level lawn with a force of 193 N. If 39% of this force is directed downward, how much power does he expend in pushing the mower 4.9 m in 12 s?

asked by Anonymous on April 24, 2013
13. ## Physics

A man pushes a lawn mower on a level lawn with a force of 200N it 40% of this force is directed downward how much woek is done by the man in pushing the mower 6.0m Q. It the man in the above question expended 60 W of power in pushing the mower 6.0m, how

asked by Isis on September 19, 2012
14. ## Physics

A lawn mower weighs 1274 N. A person tries to push the mower up a hill that is inclined 15o to the horizontal. How much force does the person have to exert along the handle just to keep the mower from rolling down the hill if the normal force exerted on

asked by Anonymous on October 9, 2017
15. ## physics

A neighbor pushes a lawn mower on a lawn that is level with a force of 230 Newtons. If 45% of this force is directed downward, how much work is done by the neighbor in pushing the mower 8 meters?

asked by roshna on December 2, 2011
16. ## physics

A gardener mows a lawn with an old-fashioned push mower. The handle of the mower makes an angle of 30 ∘ with the surface of the lawn. If a 50.0-N force is applied along the handle of the 15-kg mower, what is the normal force exerted by the lawn on the

asked by Ryan Garrett on September 19, 2018
17. ## Science

A man pushes a lawn mower on a level lawn with a force of 203 N. If 44% of the force is directed horizontally, how much work is done by the man in pushing the mower 5.4 m?

asked by KeKe on September 19, 2012
18. ## Physical science

A man pushes a lawn mower on a level lawn with a force of 192 N. If 50% of this force is directed downward, how much work is done by the man pushing the mower 7.3 m?

asked by Liz on September 9, 2012
19. ## Physics

A man pushes a lawn mower on a level lawn with a force of 203 N. If 26% of this force is directed downward, how much work is done by the man in pushing the mower 7.0 m?

asked by Chase on November 1, 2016
20. ## math:^]

A lawn mower is pushed a distance of 100 ft. along a horizontal path by a constant force of 60 lbs. The handle of the lawn mower is held at a downward angle of 45 degrees toward the horizontal. Explain what each value listed in this situation represents in

asked by mynameisundefined on May 25, 2018
21. ## science

Newton’s Second Law of Motion is expressed as F = ma. If you are pushing a lawn mower in your backyard and suddenly double the pushing force, what will happen to the lawn mower's rate of acceleration? The mass of the lawn mower is constant. A. The

asked by katie on February 8, 2013
22. ## college math

A lawn mower handle makes an angle of 60° with the ground. A woman pushes on the handle with a force of 30 pounds. How much work is done in moving the lawn mower a distance of 75 feet on level ground?

asked by lily on November 17, 2012
23. ## science

A boy is pushing a lawn mower with a force of 200N.The force makes an angle of 20° with hprizontal . 1. determine the force applied to move the lawn mower forward 2. Maximum height reached by an object.

asked by Tshilidzi on April 21, 2015
24. ## Physics

1)The x- and y-components of a velocity vector of 100 N at 240 degrees would be? 2) A man pushes a lawn mower across the lawn exerting 5 N of force along the handle at an angle of 25 degrees with the ground. What is the x-component of the force he exerts?

asked by Anonymous on January 2, 2008
25. ## applied physics

a gardener pushes a mower a distance of 900m in mowing a yard. the handle of the mower makes an angle of 40.0 degrees with the ground. the gardener exerts a force of 35.0 N alonf the handle of the mower. how much work does the gardener do in mowing the

asked by donna on April 22, 2013
26. ## Physics

A gardener pushes a mower at a distance of 900 m while mowing the yard. The handle of the mower makes an angle of 40.0 with the ground. The gardener exerts a force of 35.0 n along the handle of the mower. How much work does the gardener do in mowing the

asked by Thomas on January 26, 2015
27. ## Physics

A student pushes stright along the handles of a mower with a force of 200 N. The handles make a angle of 20°, with respect to the horizontal. The frictional force for the 25 kg mower is 100 N. What is the normal force on the mower, and what is the

asked by Alyssa on October 31, 2012
28. ## Science

Joe pushes a lawn mower four times as far as Mary while exerting only half the force, who does more work? And by how much?

asked by Tara on April 21, 2013
29. ## microeconomics problems

The GreenAcres mowing company wants to buy the new “Titan3000” lawn mowers. Assume that the lawn mowers are expected to last indefinitely, that operating expenses are negligible, and that the price per acre of mowed lawn is expected to remain constant

asked by linda on November 14, 2010
30. ## physics

Find the the force the person must exert on the 14.5 kg lawn mower to accelerate it from rest to 1.5m/s in 2.5 seconds?

asked by eddie on September 26, 2007

An electric lawn mower has a resistance of 160 ohms and draws 15A. What is the cost of operating the lawn mower for 30 minutes if electrical energy costs $0.12/kWh? asked by M on June 16, 2014 32. ## Physics A 6.50 horsepower self propelled lawn mower is able to travel at 0.56 m/s, starting from rest, in 0.050 s. If the lawn mower has a mass of 48.0 kg, what distance does the lawnmower travel in that time? (1 hp = 746 W) asked by Anon on February 21, 2018 33. ## Science as you push a lawn mower , the horizontal force is 300n, if you push the mower a distance of 500m, how much work do you do? asked by Madison on November 18, 2012 34. ## physics A person pushes a 10 kg box from rest and accelerates it to a speed of 3.2 m/s with a constant force. If the box is pushed for a time of 2.6 s, what is the force exerted by the person? force*time=mass*changeinvelocity solve for force. asked by mel on December 16, 2006 35. ## Physics Can someone check my answers for the following questions. Thanks you. 1)A hockey puck's average velocity is 22 m/s. What is its displacement after 6.0s? Answer: 132 m 2)It is 0.30 seconds after seeing a puff of smoke rise from the starter's pistol; the asked by Amy on January 5, 2008 36. ## math Dave can now mow his lawn in 20 minutes less time with the power moxer than with his hand mower. One day the power mower broke down 15 minutes after he started mowing, and he took 25 minutes more time to complete the job with the hand mower. How many asked by Rachel h on September 17, 2007 37. ## Math Mike and Ben split the cost of a new lawn mower. The regular price of the mower was$360. They used a 15% off coupon. They paid 6% tax on the reduced price of the mower. In dollars and cents how much did each pay?

asked by Helperz on March 28, 2011
38. ## physics

A person pushes a 14.5 kg lawnmower at constant speed with a force of 88 N directed along the handle, which is at an angle of 45o to the horizontal. What is the force required to accelerate it from rest to 1.5 m/s in 2.5 seconds?

asked by Steve on October 11, 2008
39. ## physics

A person pushes a 16.5-kg shopping cart at a constant velocity for a distance of 36.6 m on a flat horizontal surface. She pushes in a direction 27.9 ° below the horizontal. A 48.1-N frictional force opposes the motion of the cart. (a) What is the

asked by Kim on October 13, 2015
40. ## physics

A person pushes a 10.5-kg shopping cart at a constant velocity for a distance of 25.7 m on a flat horizontal surface. She pushes in a direction 30.9 ° below the horizontal. A 35.3-N frictional force opposes the motion of the cart. (a) What is the

asked by cswidener on May 31, 2011
41. ## Physics

A person pushes a 23.5-kg shopping cart at a constant velocity for a distance of 30.3 m on a flat horizontal surface. She pushes in a direction 31.5 ° below the horizontal. A 37.3-N frictional force opposes the motion of the cart. (a) What is the

asked by Randy on February 26, 2013
42. ## Physics

A person pushes a 23.4-kg shopping cart at a constant velocity for a distance of 31.1 m on a flat horizontal surface. She pushes in a direction 34.8 ° below the horizontal. A 38.5-N frictional force opposes the motion of the cart. (a) What is the

asked by Hannah on September 21, 2011
43. ## Physic

A person pushes a 13.7-kg shopping cart at a constant velocity for a distance of 16.3 m on a flat horizontal surface. She pushes in a direction 22.2 ° below the horizontal. A 48.7-N frictional force opposes the motion of the cart. (a) What is the

asked by Lena on March 5, 2015
44. ## Physics

A person pushes a 19.5-kg shopping cart at a constant velocity for a distance of 35.6 m on a flat horizontal surface. She pushes in a direction 25.4 ° below the horizontal. A 53.1-N frictional force opposes the motion of the cart. (a) What is the

asked by Anonymous on October 5, 2012
45. ## physics

A person pushes a 24.7-kg shopping cart at a constant velocity for a distance of 34.0 m on a flat horizontal surface. She pushes in a direction 23.2 ° below the horizontal. A 48.5-N frictional force opposes the motion of the cart. (a) What is the

asked by johhnny on July 8, 2013
46. ## physics

A person pushes a 20.1-kg shopping cart at a constant velocity for a distance of 39.5 m on a flat horizontal surface. She pushes in a direction 27.3 ° below the horizontal. A 40.6-N frictional force opposes the motion of the cart. (a) What is the

asked by iamstupid on October 14, 2014
47. ## Math

One summer, Jared earned $26 each time he mowed the lawn. He mowed the lawn a total of 13 times that summer. He had to fix his lawn mower one time during the summer, which cost him$32.42. Which number sentence could be used to find M, Jared's profit for

asked by Thomas on March 13, 2011
48. ## Algebra

A mother takes 48 minutes to mow the lawn when she works alone using a gas mower. Her daughter takes three times as long using a reel mower. How long would it take them to mow the lawn together?

asked by Judy on October 20, 2015
49. ## physics

How much work is done on a lawn mower pulled 3.4 m by a force of 54 N at an angle of 10°?

asked by Corey Golden on December 17, 2014
50. ## physics

A person pushes a 11.3-kg shopping cart at a constant velocity for a distance of 19.4 m on a flat horizontal surface. She pushes in a direction 29.2 ° below the horizontal. A 44.6-N frictional force opposes the motion of the cart. (a) What is the

asked by mica on October 19, 2011
51. ## math

please help me check!! James rents a car for x days. the rate is 19.95 per day, which includes 20 miles of driving and .40 per mile for each additional mile. If James drives 30 miles per day for the duration of this period, which of the following

asked by question on November 2, 2018
52. ## Physics

A person pushes a 16.0-kg shopping cart at a constant velocity for a distance of 26.0 m. She pushes in a direction 22.0° below the horizontal. A 38.0-N frictional force opposes the motion of the cart.

asked by D on November 11, 2012
53. ## physics

A person pushes a 16.0-kg shopping cart at a constant velocity for a distance of 20.0 m. She pushes in a direction 28.0° below the horizontal. A 54.0-N frictional force opposes the motion of the cart.

asked by Donna on October 11, 2013
54. ## Physics

A person pushes a 16.0-kg shopping cart at a constant velocity for a distance of 20.0 m. She pushes in a direction 28.0° below the horizontal. A 54.0-N frictional force opposes the motion of the cart.

asked by Donna on October 10, 2013
55. ## Physics

A person pushes a 16.0-kg shopping cart at a constant velocity for a distance of 18.0 m. She pushes in a direction 20.0° below the horizontal. A 40.0-N frictional force opposes the motion of the cart. (a) What is the magnitude of the force that the

asked by Anon on October 3, 2014
56. ## science

a man pushes a lawnmower of mass 50kg at a constant velocity over a horizontal lawn.he exerts a push of 200n on the handle a t angle of 60 to the horizontal..Dertemime the vertical componet of this force and determine the horizontal component of this force

asked by fulufhelo on March 6, 2013
57. ## Physics Work unit

1. A football player pushes a tackle dummy forwards at a constant 0.85m/s for 11m using 7150J of energy. The tackling dummy mass is 120kg. a) find force the player exerts? b) what is the frictional force the dummy exerts? c) what work is done by the

asked by Jamie on February 1, 2014
58. ## physics Work unit

1. A football player pushes a tackle dummy forwards at a constant 0.85m/s for 11m using 7150J of energy. The tackling dummy mass is 120kg. a) find force the player exerts? b) what is the frictional force the dummy exerts? c) what work is done by the

asked by Jamie on February 1, 2014
59. ## physics

1. A man pushes on a box at an angle of 30.0° with a force of 20.0 N and the box moves across the floor. Which of the following component of the force do you use to calculate work? (Points : 1) 0.00 N 10.0 N 17.3 N 20.0 N Question 2.2. A man carries a 10

asked by Hailey on February 2, 2015
60. ## physics

a person pushes a 10kg mass at a constant speed across a u=0.150, 8.50m long floor at a constant speed how much work does the person do? (125J) how much work does friction do? ( -125J)

asked by sammeh on November 16, 2009
61. ## science

two people are pushing a couch in the same direction one person pushes with a force of 2n the other person pushes with a force of 4n

asked by kolsen on May 25, 2018
62. ## Physics

Estimate the work you do to mow a lawn 14m by 23m with a 0.5m-wide mower. Assume you push with a force of about 15N.

asked by Phil on September 29, 2010
63. ## Physics

Estimate the work you do to mow a lawn 14m by 23m with a 0.5m-wide mower. Assume you push with a force of about 15N.

asked by Phil on September 28, 2010
64. ## Logical Reasoning

During the spring, Jim mows his lawn twice per week. During the summer, Jim mows his lawn once per week. A) Jim's lawn grows faster in the summer than in the spring. B) Jim bought a new lawn mower just before summer. C) it is important to Jim to keep his

asked by Jenna on August 6, 2015

question # 1 :Estimate the work you do to mow a lawn 13m by 23m with a 60cm wide mower. Assume you push with a force of about 15 N

asked by kay on May 21, 2012
66. ## physics

question # 1 :Estimate the work you do to mow a lawn 13m by 23m with a 60cm wide mower. Assume you push with a force of about 15 N .

asked by kay on May 21, 2012
67. ## Physics

Two people push on a crate. Person 1 pushes in the positive X direction with a force of 25N. The second person pushes in the negative X direction at an angle of 15 degrees below the horizontal with a magnitude of 18.5N the box moves with uniform velocity.

asked by Scott on November 17, 2009
68. ## physics

A person pushes with force F on a box which remains at rest on a rough floor as shown in the top figure. The bottom figures illustrates all the force acting on the box. a) What condition must be satisfied by all the force acting on the box so that it

asked by / on April 5, 2013
69. ## Math

Venski and his brother have each agreed to mow half of the front lawn, which is a rectangle, 120 feet by 60 feet. The law mower cuts a 4-foot-wide strip. If Venski starts at one corner and mows around the lawn toward the center, on which trip around will

asked by Ruth on April 1, 2014
70. ## math

Nala and her cousin agreed that they would each mow one-half of the lawn. The lawn is a 25' by 45' rectangle. The lawn mower cuts a path two feet wide. Nala starts at one corner and mows a path completely around the outside, and then continues to mow the

asked by Elizabeth on September 21, 2014
71. ## Math again

The price of a lawn mower is x dollars. The store is having a 75% end of summer clearance sale. Which expression can be used to find the clearance price of the mower? A) .25x B) .75x C) x - .25(75) D) x + .25(75) How do I figure this out?

asked by Anonymous on February 16, 2018
72. ## physics

Joe pushes horizontally on a heavy box across a rough surface at constant speed. Which one of the following statements concerning this situation is false? If Joe stops pushing on the box, the box will stop sliding eventually. If Joe doubles his force on

asked by Sam on June 8, 2014
73. ## Physics

Consider a 52-cm-long lawn mower blade rotating about its center at 3390 rpm. (a) Calculate the linear speed of the tip of the blade. (b) If safety regulations require that the blade be stoppable within 3.0 s, what minimum angular acceleration will

asked by Jessie on June 14, 2012
74. ## physics

a lawn mower is pushed up a 15degree slope by a 20lb force. Find the component acting parallel to the slope

asked by Jason on September 26, 2011
75. ## physics

A man pushes on a piano of mass 180 so that it slides at a constant velocity of 12.0 down a ramp that is inclined at 11.0 above the horizontal. No appreciable friction is acting on the piano. Calculate the magnitude and direction of this push A. if the man

asked by bob on November 8, 2010
76. ## Physics

A man pushes on a piano of mass 180 kg so that it slides at a constant velocity of 12.0 cm/s down a ramp that is inclined at 11.0degrees above the horizontal. No appreciable friction is acting on the piano. Calculate the magnitude and direction of this

asked by Carmen on November 11, 2010
77. ## physics

A shopper pushes a grocery cart 20.0 m at constant speed on level ground, against a 35.0 N frictional force. He pushes in a direction 25.0º below the horizontal. (a) What is the work done on the cart by friction? (b) What is the work done on the cart by

78. ## physics

a person pushes a box across a horizontal surface at a constant speed of .5 meter per second. the box has a mass of 40 kg and the coefficient of sliding friction is .25. The power supplied to the boxx by the person is... please Explain!!

asked by hana on January 30, 2009
79. ## Probability

4,915 people were surveyed about their recent purchases. 1,027 of those people surveyed bought a lawn mower within the last year, 918 bought a snow blower within the last year, and 3,387 didn’t buy either of the two. a) How many people bought a lawn

asked by Nick on January 30, 2012
80. ## Math Problem Solving

Jay and Mark run a lawn mowing service. Mark's mower is twice as big as Jay's, so whenever they both mow, Mark mows twice as much as Jay in a given time period. When Jay and Mark are working together, it takes them 4 hours to cut the lawn of an estate. How

asked by Johnny on January 18, 2010
81. ## math

What is the tip speed (ft/min) of a 21 inch long rotary lawn mower blade that is connected to the output shaft of an engine operating at 3400 rpm? What are the steps to figure this out?

asked by Sushmitha on March 28, 2012
82. ## math

Complete in Metric Conversions: What is the tip speed (ft/min) of a 21 inch long rotary lawn mower blade that is connected to the output shaft of an engine operating at 3400 rpm?

asked by Amy on March 27, 2012
83. ## Physics

a person pushes on a hockey puck with their stick at an angle so the vertical force is 22N down and the horizontal force is 45N forward. Assume the ice is frictionless. What is the actual force the hockey player transmits to the puck? what is the work done

asked by Anonymous on May 29, 2014
84. ## Physics

Consider a 59-cm-long lawn mower blade rotating about its center at 2990 rpm. (a) Calculate the linear speed of the tip of the blade. (b) If safety regulations require that the blade be stoppable within 3.0 s, what minimum angular acceleration will

asked by Camilla on June 16, 2012
85. ## physics

A person of mass m jumps off the ground. Suppose the person pushes off the ground with a constant force of magnitude F for T seconds. What was the magnitude of the displacement of the center of mass of the person while they were in contact with the ground?

asked by Anonymous on October 24, 2013
86. ## Physics

A shopper pushes a grocery cart for a distance 18 m at constant speed on level ground, against a 25 N frictional force. He pushes in a direction 24° below the horizontal. What is the work done on the cart by the shopper, in joules? Magnitude of the force,

asked by TT2014 on March 22, 2015
87. ## physics

A shopper pushes a grocery cart 20m at constant speed on level ground against a 35N frictional force. He pushes in a direction 25 degrees below the horizontal. What is the work done on the cart by gravity? I know you can use W=Fdcos(theta) where

asked by Juliette on October 4, 2010
88. ## Maths

A rectangle lawn has perimeter of 34m. Another rectangular lawn is 2cm narrower but 2m longer than the first lawn. If A(one) and A(two) are the areas of the first and second lawn respectively and A(one):A(two)=7:6, find i)the dimension of the lawn. II)the

asked by Carter on May 12, 2016
89. ## physics

JUMPING OFF THE GROUND (10 points possible) A person of mass m jumps off the ground. Suppose the person pushes off the ground with a constant force of magnitude F for T seconds. What was the magnitude of the displacement of the center of mass of the person

asked by Anonymous on October 25, 2013
90. ## physics (elena)

JUMPING OFF THE GROUND (10 points possible) A person of mass m jumps off the ground. Suppose the person pushes off the ground with a constant force of magnitude F for T seconds. What was the magnitude of the displacement of the center of mass of the person

asked by Anonymous on October 24, 2013
91. ## Physics

In loading a fish delivery truck, a person pushes a block of ice up a 200 incline at constant speed. The push is 150N in magnitude and parallel to the incline. The block has a mass of 35.0 kg. What is the force of kinetic friction on the block of ice?

asked by Yuki on October 17, 2011
92. ## physics

Write the energy transformation equation for each situation Fireworks explodes An arrow is shot off a bow and flies through the air A paved driveway feels hot on a clear ,sunny day A camper raises an axe to chop a chunk of wood A lawn mower with a gasoline

asked by Melissa on April 12, 2012
93. ## Physics

I need help, i'm not sure if i have the correct answers and i'm scared to submit them. A man carries a 10 kg sack of groceries in his arms with a force of 50 N as he walks forward a distance of 10 m. How much work has he done? (Points : 1) 0 J 50 J 100 J

asked by Me on February 24, 2014
94. ## Physics

Three men are trying to move a wardrobe. One pushes northward with a force of 100N; the second pushes eastward with a force of 173N; the third pushes in a direction 60 degrees west of south with a force of 200N. What is the resultant force on the wardrobe

asked by Amber on September 11, 2012
95. ## physic

A man pushes a wooden box across the floor at a constant speed of 0.5 m/s by applying a horizontal force of 200N. Wht is the value of the force of friction on the box? Explain your answer.

asked by sheriff on March 25, 2015
96. ## Physics

A 149 kg crate is pushed at constant speed up a frictionless inclined plane of theta = 51 with the horizontal. Assuming one pushes with a horizontal force, what is the magnitude of the force F (in N) required to do this?

asked by JAYZ on October 14, 2013
97. ## science

what type of simple machine is a lawn mower?

asked by DuLaney,9 on November 1, 2007
98. ## Physics

A crate of mass 29 kg is pushed up a ramp by a person as shown in the figure below. The person pushes the crate a distance of 25 m as measured along the ramp. Assume the crate moves at constant velocity. Assume the coefficient of kinetic friction between

asked by Sierra on July 11, 2012
99. ## Physics

A 149 kg crate is pushed at constant speed up a frictionless inclined plane of $\theta$ = 51 $^{\circ}$ with the horizontal. Assuming one pushes with a horizontal force, what is the magnitude of the force F (in N) required to do this?

asked by JAYZ on October 14, 2013
100. ## Physics

Determine the work done by a person when lowering an object of mass 2.6 kg by a distance of 2.4 m. The person applies a force Fext such that the object moves with constant speed, i.e., without acceleration? My ans: W=F*d F = ma But it's saying constant

asked by Nikita on November 17, 2009