1. physics

    A ball of mass m strikes a wall that is perpendicular to its path at speed +v and rebounds in the opposite direction with a speed –v. The impulse imparted to the ball by the wall is

    asked by jesse k on February 21, 2014
  2. Physics Homework

    Could you please check my answers? Thanks! 1. You push a heavy car by hand. The car, in turn, pushes back with an opposite but equal force on you. Doesn’t this mean the forces cancel one another, making acceleration impossible? Why or why not? -No,

    asked by Soly on September 11, 2007
  3. physics

    A 5.3-kg block is pushed 2.3 m up a vertical wall with constant speed by a constant force of magnitude F applied at an angle of θ = 30° with the horizontal, as shown in the figure below. If the coefficient of kinetic friction between block and wall is

    asked by sherry on February 27, 2016
  4. Math

    A 3 foot long pole leans against a wall. The bottom is 5 feet from the wall. How much farther should the bottom be pulled away from the wall so that the top moves the same amount down the wall?

    asked by Karen on February 23, 2011
  5. Physics

    A bowling ball traveling with constant speed hits the pins at the end of a bowling lane 16.5 m long. The bowler hears the sound of the ball hitting the pins 2.51s after the ball is released from his hands. What is the speed of the ball? The speed of sound

    asked by Lindsay on August 30, 2013
  6. physics

    A uniform rigid pole of length L and mass M is to be supported from a vertical wall in a horizontal position, as shown in the figure. The pole is not attached directly to the wall, so the coefficient of static friction, μs,between the wall and the pole

    asked by need help on February 28, 2012
  7. physics

    A uniform rigid pole of length L and mass M is to be supported from a vertical wall in a horizontal position, as shown in the figure. The pole is not attached directly to the wall, so the coefficient of static friction, μs, between the wall and the pole

    asked by rey on February 27, 2012
  8. Physics

    A uniform rigid pole of length L and mass M is to be supported from a vertical wall in a horizontal position, as shown in the figure. The pole is not attached directly to the wall, so the coefficient of static friction, μs,between the wall and the pole

    asked by James on June 21, 2012
  9. physics

    A uniform rigid pole of length L and mass M is to be supported from a vertical wall in a horizontal position, as shown in the figure. The pole is not attached directly to the wall, so the coefficient of static friction, μs,between the wall and the pole

    asked by Anonymous on February 28, 2012
  10. Physics

    A ball of mass 0.1 is thrown against a wall. It strikes the wall normally with a velocity of 30 meter per second and rebounds with a velocity of 20 m/s. Calculate the change in momentum of the ball.

    asked by Sahil on July 7, 2016
  11. Physics

    A bowling ball traveling with constant speed hits the pins at the end of a bowling lane 16.5 m long. The bowler hears the sound of the ball hitting the pins 2.50 s after the ball is released from his hands. What is the speed of the ball? The speed of sound

    asked by Courtney on September 28, 2015
  12. Physics

    A bowling ball traveling with constant speed hits the pins at the end of a bowling lane 16.5 m long. The bowler hears the sound of the ball hitting the pins 2.44 s after the ball is released from his hands. What is the speed of the ball? The speed of sound

    asked by Courtney on September 29, 2015
  13. physics

    An 77 person stands on a uniform ladder 4.0 long, that weighs 100 , as shown in the figure . The floor is rough; hence, it exerts both a normal force, , and a frictional force, , on the ladder. The wall, on the other hand, is frictionless; it exerts only a

    asked by bob on December 7, 2011
  14. Physics

    I don't necessarily need an answer here... just a step in the right direction. If you drive into a wall at 5 m/sec, rebound at 1 m/sec, and make contact with the wall for .15 sec, with what force did the wall exert on the car? (mass = 220 kg) I can't

    asked by Mark on May 27, 2008
  15. physics

    In these figures, we see a boy named Billy riding a carnival ride called the Rotor and the free-body diagram for the forces acting on him. What must be the magnitudes of the vectors (f)wall,Billy and (W)Earth,Billy if Billy remains at the same height along

    asked by Betty on October 2, 2016
  16. Physics

    A 1230 N beam is attached to a vertical wall at one end and is supported by a cable at the other end. A 1910 N crate hangs from the far end of the beam. What are the magnitude of the horizontal and vertical components of the force that the wall exerts on

    asked by Sahrish on November 16, 2012
  17. PHYSICS HELP!!

    An object is launched from the ground into the air at an angle of 38.0 o (above the horizon) towards a vertical brick wall that is 15.0 m horizontally from the launch point. If the ball takes 1.30 seconds to collide with the wall, with what speed was the

    asked by baz on April 5, 2015
  18. physics

    A person is stretching by putting their arms straight over their heads and bending forward at their ankles until their hands are pushing against the wall in front of them. As they stretch, they keep stepping back from the wall, leaning further forward. The

    asked by Jessica on July 12, 2012
  19. algebra

    A ladder is resting against a wall. The top of the ladder touches the wall at a height of 15 feet and the length of the ladder is one foot more than twice the distance from the wall. Find the distance from the wall to the bottom of the ladder. (Hint: Use

    asked by astrid on April 2, 2008
  20. physics

    A body of mass 0.500 kg moving at 6.00 m/s strikes a wall normally and bounces back with a speed of 4.00 m/s. The mass was in contact with the wall for 0.200 s. Find: a) the change of momentum of the mass b) the average force the wall exerted on the mass

    asked by Anonymous on October 20, 2017
  21. physics

    Which direction will the support force by the wall point when the force diagram is drawn? The book is held motionless against a wall by yout hand. (Up, down, legt or right?)

    asked by dominique on July 19, 2012
  22. Algebra

    A. A bowling ball is dropped from a height of 35 feet write a function that gives the height h (in feet) of the bowling ball after t seconds H(t)=__ B. Find the height of the bowling ball after 1 second C. How long does the bowling ball take to hit the

    asked by Kylet davis on March 2, 2016
  23. Algebra

    A. A bowling ball is dropped from a height of 35 feet write a function that gives the height h (in feet) of the bowling ball after t seconds H(t)=__ B. Find the height of the bowling ball after 1 second C. How long does the bowling ball take to hit the

    asked by Kylet davis on March 2, 2016
  24. physics

    jack measured that his racquet gives a squash ball 45.0J of kinetic energy when he hits it with a particilar shot.he also measures that it has 18.0J of kinetic energy after one bounce off the court wall. what percentage of its mechanical energy does the

    asked by Emma on May 8, 2007
  25. physics

    IP You want to nail a 2.4kg- board onto the wall of a barn. To position the board before nailing, you push it against the wall with a horizontal force to keep it from sliding to the ground What happens to the force of static friction if you push against

    asked by mathhelp on November 11, 2010
  26. Physics

    A special pulley has two discs with radii R1 = .8 m and R2 = .35 m. A rope from the R2 disc connects the pulley to a wall and a rope from the R1 disc connects the pulley to a hanging mass. The axle is frictionless. The total mass of the pulley is 15 kg. a.

    asked by Charlie on April 23, 2012
  27. PHYSICS(HELP)

    A ruler stands vertically against a wall. It is given a tiny impulse at θ=0∘ such that it starts falling down under the influence of gravity. You can consider that the initial angular velocity is very small so that ω(θ=0∘)=0. The ruler has mass m=

    asked by Anonymous on December 9, 2013
  28. science

    A 3.4 kg-object moving at 9.9 m/s perpendicular to a wall rebounds from the wall at 4.5 m/s. The magnitude of the change in the momentum of the ball is:

    asked by haddad on August 16, 2015
  29. calculus

    A searchlight rotates at a rate of 4 revolutions per minute. The beam hits a wall located 9 miles away and produces a dot of light that moves horizontally along the wall. How fast (in miles per hour) is this dot moving when the angle between the beam and

    asked by Anonymous on March 25, 2012
  30. Physics

    Consider two cases in which the same ball is thrown against a wall with the same initial velocity. In case A, the ball sticks to the wall and does not bounce.In Case B, the ball bounces back with the same speed that it came with. a.) In which of the two

    asked by Anonymous on July 7, 2014
  31. Physics

    Consider two cases in which the same ball is thrown against a wall with the same initial velocity. In case A, the ball sticks to the wall and does not bounce.In Case B, the ball bounces back with the same speed that it came with. a.) In which of the two

    asked by Anonymous-HELP! PLEASE!! on July 7, 2014
  32. Physics

    Consider two cases in which the same ball is thrown against a wall with the same initial velocity. In case A, the ball sticks to the wall and does not bounce.In Case B, the ball bounces back with the same speed that it came with. A.)In which of the two

    asked by Anonymous on July 7, 2014
  33. physics

    A lightbulb emits light that creates a shadow of a ball on a wall. If the radius of the ball is 12.1 cm, and the radius of the shadow is 25.5 cm, and the ball is 2.09 m away from the wall, how far is the lightbulb away from the wall?

    asked by Anonymous on September 14, 2012
  34. Two Dimensional elastic

    A 25000 kg bowling ball moving at 40 m/s on a path angled at 17° hits a 10000 kg bowling ball moving at 25 m/s on a path angled at 60°, causing the lighter ball to be deflected off to an 80° angle. Assuming this is a two-dimensional perfectly elastic

    asked by Scoop on November 29, 2012
  35. physics

    A 13 N horizontal force pushes a block weighing 4.5 N against a vertical wall (Fig. 6-26). The coefficient of static friction between the wall and the block is 0.68, and the coefficient of kinetic friction is 0.35. Assume that the block is not moving

    asked by karim on March 6, 2011
  36. physics

    A 10 N horizontal force pushes a block weighing 4.9 N against a vertical wall (Fig. 6-26). The coefficient of static friction between the wall and the block is 0.55, and the coefficient of kinetic friction is 0.35. Assume that the block is not moving

    asked by Andrea on October 23, 2011
  37. calculus

    A searchlight rotates at a rate of 4 revolutions per minute.? The beam hits a wall located 13 miles away and produces a dot of light that moves horizontally along the wall. How fast (in miles per hour) is this dot moving when the angle between the beam and

    asked by saud on October 30, 2011
  38. calculus

    A searchlight rotates at a rate of 4 revolutions per minute.? The beam hits a wall located 13 miles away and produces a dot of light that moves horizontally along the wall. How fast (in miles per hour) is this dot moving when the angle between the beam and

    asked by saud on October 30, 2011
  39. Physics(URGENT!!!!)

    A ruler stands vertically against a wall. It is given a tiny impulse at θ=0∘ such that it starts falling down under the influence of gravity. You can consider that the initial angular velocity is very small so that ω(θ=0∘)=0. The ruler

    asked by keitanako on December 9, 2013
  40. Phyics

    A 1390-N uniform beam is attached to a vertical wall at one end and is supported by a cable at the other end. A 1960-N crate hangs from the far end of the beam. Using the data shown in the figure, find (a) the magnitude of the tension in the wire and the

    asked by Johnson on November 10, 2013
  41. Physics

    You throw a 6.2 bowling ball down a bowling alley. The ball is in your hand for a distance of 1.5 meters. Its speed increases from 0 to 16m/s(36mph). How much force did you apply?

    asked by Cory on December 17, 2012
  42. Physics/Math

    A 17 N horizontal force F pushes a block weighing 6.0 N against a vertical wall. The coefficient of static friction between the wall and the block is 0.68, and the coefficient of kinetic friction is 0.48. Assume that the block is not moving initially. Will

    asked by COFFEE on February 10, 2007
  43. Algebra 2

    Hi, I need help finding the domain and range of the Quadratic Model on part b. I've included part a. just in case you may need it. a.The parabolic path of a thrown ball can be modeled by the table. the top of the wall is at (5,6). Will the ball go over the

    asked by Kate on October 15, 2014
  44. PHYSICS

    During a play, a tennis player hits the ball when its velocity is 20 m/s towards him. The racquet exerts a force of 540N on the ball for 6.90 ms, giving its returning velocity of 42 m/s. Find the mass of the ball

    asked by Hep on December 19, 2012
  45. Physics Homework

    1. You push a heavy car by hand. The car, in turn, pushes back with an opposite but equal force on you. Doesn’t this mean the forces cancel one another, making acceleration impossible? Why or why not? -No, because of the system that is involved. The

    asked by Soly on September 12, 2007
  46. 9th grade

    A bowler rolls a 5 kg bowling ball down a magical frictionless bowling alley. The ball accelerates at an average rate of 2 m/s^2. How much force did the bowler apply to the ball?

    asked by Nick on November 3, 2010
  47. Physics MCQ - Quick check

    A washing machine spin dryer has a period T. In order to triple the centripetal acceleration of the clothes in the dryer the period should be ? 3T A cube of mass 2.0 kg is kept pressed against a vertical wall by applying a horizontal force of 60N. If the

    asked by James Henry the 3rd on April 28, 2014
  48. physics

    A 17 N horizontal force F pushes a block weighing 3.0 N against a vertical wall. The coefficient of static friction between the wall and the block is 0.65, and the coefficient of kinetic friction is 0.45. Assume that the block is not moving initially. (a)

    asked by Sam on July 14, 2010
  49. physics

    A 12 N horizontal force pushes a block weighing 5.0 N against a vertical wall (Fig. 6-26).The coefficient of static friction between the wall and the block is 0.60, and the coefficient of kinetic friction is 0.40. Assume that the block is not moving

    asked by Hamed on January 5, 2014
  50. Physics

    A squash ball hits a wall at a height of 4m and a distance of 6m away. If the ball left the racquet with a speed of 15m/s, with what angle did the player hit the ball? I have applied concepts of projectile motion and tried kinematic equations. However I

    asked by Tim on June 20, 2016
  51. physics

    A projectile is launched from ground level at an angle of 45 degrees above the horizontal with a speed of 40m/s. It is aimed straight towards a high wall that is a horizontal distance of 120m away from the launch point. a) How much time will the projectile

    asked by anna on March 8, 2016
  52. physics

    A spherical bowling ball with mass m = 4.1 kg and radius R = 0.116 m is thrown down the lane with an initial speed of v = 8.9 m/s. The coefficient of kinetic friction between the sliding ball and the ground is ¦Ì = 0.34. Once the ball begins to roll

    asked by JOJO on March 18, 2013
  53. Calc.

    A ladder 25ft long is leaning against the wall of a house. The ladder is pulled away from the wall at a rate of 2 ft per second. How fast is the top of the ladder moving down the wall when its base is 7ft from the wall?

    asked by Preston on November 1, 2010
  54. AP Physics

    A home run is hit such a way that the baseball just clears a wall 30 m high located 114 m from home plate. The ball is hit at an angle of 37 ◦ to the horizontal, and air resistance is negligible. Assume the ball is hit at a height of 1 m above the

    asked by Noah on September 11, 2012
  55. physics

    When you lift a bowling ball with a force of 60.7 N, the ball accelerates upward with an acceleration a. If you lift with a force of 69.3 N, the ball's acceleration is 1.99a. Calculate the weight of the bowling ball.

    asked by Brad on February 15, 2015
  56. Physics

    An arrow is shot with a velocity of 30 m/s at an angle 37° above the horizontal. It is initially 2 meters above the ground and 15 meters from a wall. T what height does it hit the wall? Is it still going up just before it hits or is it already on its way

    asked by Shyne Fornea on September 28, 2016
  57. PHYSICS!!! HELP

    A ruler stands vertically against a wall. It is given a tiny impulse at θ=0∘ such that it starts falling down under the influence of gravity. You can consider that the initial angular velocity is very small so that ω(θ=0∘)=0. The ruler has mass m=

    asked by Anonymous on December 8, 2013
  58. physics(HELP)

    A ruler stands vertically against a wall. It is given a tiny impulse at θ=0∘ such that it starts falling down under the influence of gravity. You can consider that the initial angular velocity is very small so that ω(θ=0∘)=0. The ruler has mass m=

    asked by Anonymous on December 8, 2013
  59. PHYSICS(HELP!!)

    A ruler stands vertically against a wall. It is given a tiny impulse at θ=0∘ such that it starts falling down under the influence of gravity. You can consider that the initial angular velocity is very small so that ω(θ=0∘)=0. The ruler has mass m=

    asked by Anonymous on December 8, 2013
  60. Classical Mechanics Physics

    A ruler stands vertically against a wall. It is given a tiny impulse at θ=0∘ such that it starts falling down under the influence of gravity. You can consider that the initial angular velocity is very small so that ω(θ=0∘)=0. The ruler has mass m=

    asked by Anonymous on December 6, 2013
  61. Physics Classical Mechanics

    A ruler stands vertically against a wall. It is given a tiny impulse at θ=0∘ such that it starts falling down under the influence of gravity. You can consider that the initial angular velocity is very small so that ω(θ=0∘)=0. The ruler has mass m=

    asked by Teresa on December 8, 2013
  62. PHYSICS(ELENA

    A ruler stands vertically against a wall. It is given a tiny impulse at θ=0∘ such that it starts falling down under the influence of gravity. You can consider that the initial angular velocity is very small so that ω(θ=0∘)=0. The ruler has mass m=

    asked by Anonymous on December 8, 2013
  63. math

    Jorge plans to paint a bedroom wall that is shaped like a trapezoid. The bottom edge of the wall is 22.5 feet long, and the top edge of the wall is 9.5 feet long. If the wall is 8 feet tall, what is the area of the wall?

    asked by hello on March 12, 2018
  64. Physics

    A uniform 250 N ladder rests against a perfectly smooth wall, making a 35 degree angle with the wall. (a) find the normal forces that the wall and the floor exert on the ladder. B) what is the friction force on the ladder at the floor?

    asked by Sarah on June 25, 2009
  65. college physics

    A ball of mass 0.70 kg moving with speed of 1.0 m/s hits a wall and bounces back with the same speed in the opposite direction. What is the change in the ball's kinetic energy?

    asked by craig45 on February 27, 2011
  66. physics

    A brick wall with a thermal emissivity of 0.8 is heated by the sun all day and is at a temperature of 25 °C in early evening. A pedestrian walking past the wall feels its warmth radiating in to the cool evening air. The wall has surface area of 5m^2. What

    asked by sand on January 3, 2012
  67. physics

    A particle travels horizontally between 2 parallel walls separated by 18.4 m. It moves toward the opposing wall at a constant rate of 5.5 m/s. Also it has an acceleration in the direction parallel to the walls of 1.8 m/s^2.What will its speed be when it

    asked by cassie on June 23, 2011
  68. science

    A bowling ball has a mass of 10 kg and it is accelerating at a rate of 2m/s2. Calculate the force with which it hits the pins. force= mass*acceleration units: 1 newton= 1kg m/s^2

    asked by danny on March 18, 2007
  69. Physics

    A 0.140-kg baseball is pitched horizontally at 36.7 m/s. When a player hits the ball, it moves at the same speed, but in the opposite direction. If the bat and the ball are in contact for 0.450 ms, calculate the average force the bat exerts on the ball.

    asked by HELP on December 9, 2011
  70. Calculus

    1a. 15 ft ladder is placed against a vertical wall. the bottom of the ladder is sliding away from the wall at a rate of 2 ft/sec. How fast is the top of the ladder sliding down the wall when the bottom of the ladder is 9 ft from the wall? 1b. Using the

    asked by Trevor on February 28, 2013
  71. physics - HELP ASAP!

    A 3.60 kg ball is dropped from the roof of a building 184.8 m high. While the ball is falling to earth, a horizontal wind exerts a constant force of 12.1 N on the ball. (acceleration of gravity = 9.81 m/s^2) How far from the building does the ball hit the

    asked by Desperate Help! on November 7, 2009
  72. Math

    A ladder is placed against a wall, with its base 2 m from the wall. The ladder touches the top of a 2 m fence that is 1.5 m from the wall. How high up the wall does the ladder reach? Thanks for answering! Your help is greatly appreciated.

    asked by Jim on September 4, 2011
  73. physics

    A bullet is fired through a wall that is 10.0 cm. thick. The bullet entered the wall at 400. m/s, and it exited from the wall at 220. m/s. What was the average acceleration of the bullet while it was passing through the wall?

    asked by tyler on August 24, 2012
  74. physics

    7. No work is done by gravity on a bowling ball resting or moving on a bowling alley because the force of gravity on the ball acts perpendicular to the surface. But on an incline, the force of gravity has a vector component parallel to the alley. Discuss

    asked by Anonymous on April 2, 2013
  75. math

    a student is painting one wall of a room. a square window is located in the middle of the wall to be painted. the window measures 3 feet on one side. the area of the wall, not including the window, is 80ft squared. find the height of the wall to the

    asked by jaz on January 10, 2012
  76. physics

    A 5.3-kg block is pushed 2.3 m up a vertical wall with constant speed by a constant force of magnitude F applied at an angle of θ = 30° with the horizontal, as shown in the figure below. If the coefficient of kinetic friction between block and wall is

    asked by sherry on March 2, 2016
  77. Science

    A pendulum is made with a bowling ball as the bob and a wire attached to the ceiling, as shown in the illustration below. The person in the illustration pulls the bowling ball back until it touches his nose, then releases the bowling ball. Assume that he

    asked by Susie on February 28, 2017
  78. physics

    When serving a tennis ball, the player hits it when its velocity is zero (at the highest point of a vertical toss). The racket exerts a force of 560 N on the ball for 5.00 ms, giving it a final velocity of 45.0 m/s. Using these data, find the mass of the

    asked by Amelia on December 19, 2011
  79. physics

    When serving a tennis ball, the player hits it when its velocity is zero (at the highest point of a vertical toss). The racket exerts a force of 560 N on the ball for 5.00 ms, giving it a final velocity of 45.0 m/s. Using these data, find the mass of the

    asked by Amelia on December 19, 2011
  80. calculus

    A searchlight rotates at a rate of 3 revolutions per minute. The beam hits a wall located 7 miles away and produces a dot of light that moves horizontally along the wall. How fast (in miles per hour) is this dot moving when the angle \theta between the

    asked by MEMO on March 7, 2014
  81. Physics

    A block of mass 9.00 kg is pushed up against a wall by a force P that makes a 50.0° angle with the horizontal as shown below. The coefficient of static friction between the block and the wall is 0.245. Determine the possible values for the magnitude of P

    asked by Kathy on June 6, 2012
  82. Algebra- word problem

    Jordan has a photograph on his wall that is 3 in. long and 6 in. wide. He takes it to be framed which increases the length and width by 2 in. each. How does getting the picture framed change the amount of wall space needed? My choice is B- Correct??

    asked by Mary on May 15, 2011
  83. Calculus

    Batman was driving the Batmobile at 90 mph (=132 ft/sec), when he sees a brick wall directly ahead. When the Batmobile is 400 feet from the wall, he slams on the brakes, decelerating at a constant rate of 22ft/sec2. Does he stop before he hits the brick

    asked by Meme on April 9, 2015
  84. Physics

    A bowling ball pendulum demonstration goes bad. The 8.0-lb bowling ball is raised to the height of the demonstrators nose, 160 cm above the ground, and releases the bowling ball. When the bowling ball is at the lowest point of the swing (36 inches above

    asked by Stuart on November 13, 2016
  85. physics

    The weightless strut in the figure below is not attached to the wall; it is prevented from falling only by friction. (Let w = 360 N, L = 5.25 m and h = 3.25 m.) (a) Find the magnitude of the force of friction between the wall and the strut. (b) Find the

    asked by Anonymous on June 12, 2014
  86. physics

    You decide to use your garden hose to wash your garage door. The water shoots out at a rate of 10 kg/s and a speed of 16 m/s with respect to the hose. When the water hits the garage, its speed decreases to zero. Determine the force that the water exerts on

    asked by Abbie on November 13, 2016
  87. physics!!

    A ball of mass m strikes a wall that is perpendicular to its path at speed +v and rebounds in the opposite direction with a speed –v. The impulse imparted to the ball by the wall is 1) 2mv 2)mv 3)-mv 4)zero 5)-2mv

    asked by jesse k on February 21, 2014
  88. physics

    A mass is thrown upward towards a vertical wall. If the release point is at a horizontal distance of 12 meters from the base of the wall, and the ball is launched at an angle of 60 degrees above the horizontal, with what speed need it be thrown so that it

    asked by Victor on September 21, 2014
  89. Physics

    a batman deflects a boy by an angle 90 without change in acc. speed of 54km/h if mass of ball is 0.15kg. what is the impulse exerted on the ball also find force exerted on ball if ball remain for 0.1sec In connected with wall?

    asked by Mani on September 7, 2016
  90. Physics

    Four balls are suspended by cords. The longer, top cord loops over a frictionless pulley and pulls with a force of magnitude 95 N on the wall to which it is attached. The tensions in the shorter cords are T1 = 56.0 N (between ball A & B), T2 = 46.7 N

    asked by COFFEE on February 6, 2007
  91. Science

    A pendulum is made with a bowling ball as the bob and a wire attached to the ceiling, as shown in the illustration below. The person in the illustration pulls the bowling ball back until it touches his nose, then releases the bowling ball. Assume that he

    asked by Susie on February 28, 2017
  92. Science

    A pendulum is made with a bowling ball as the bob and a wire attached to the ceiling, as shown in the illustration below. The person in the illustration pulls the bowling ball back until it touches his nose, then releases the bowling ball. Assume that he

    asked by Sue on February 28, 2017
  93. Science

    A pendulum is made with a bowling ball as the bob and a wire attached to the ceiling, as shown in the illustration below. The person in the illustration pulls the bowling ball back until it touches his nose, then releases the bowling ball. Assume that he

    asked by Sue on February 28, 2017
  94. Science

    A pendulum is made with a bowling ball as the bob and a wire attached to the ceiling, as shown in the illustration below. The person in the illustration pulls the bowling ball back until it touches his nose, then releases the bowling ball. Assume that he

    asked by Sue on February 28, 2017
  95. Physics

    A 25,000kg bowling ball moving at 40 m/s on a path angled at 17 degrees hits a 10000kg bowling ball moving at 25 m/s on a path angled at 60 degrees causing the lighter ball to be deflected of to an 65 degree angle. Assuming this is a two dimensional,

    asked by Michelle on May 2, 2014
  96. Physics

    King Arthur's knights fire a cannon from the top of the castle wall. The cannonball is fired at a speed of 63 m/s and an angle of 42°. A cannonball that was accidentally dropped hits the moat below in 1.1 s. How far from the castle wall does the

    asked by Needs help! on January 25, 2016
  97. physics

    A 5.1-kg bowling ball and a 8.4-kg bowling ball rest on a rack 0.50 m apart. (a) What is the force of gravity exerted on each of the balls by the other ball? (b) At what separation is the force of gravity between the balls equal to 2.0e-9 N?

    asked by stoic-rider77 on November 25, 2012
  98. Physics

    A 5.1 kg bowling ball and a 7.1 kg bowling ball rest on a rack 1.07 m apart. (a) What is the force of gravity exerted on each of the balls by the other ball? (b) At what separation is the force of gravity between the balls equal to 2.0 10-9 N?

    asked by Kelly17 on May 14, 2010
  99. physics

    A ball whose mass is 0.2kg hits the floor with a speed of 8m/s and rebounds upward with a speed of 7 m/s. The ball was in contact with the floor for 0.5 ms. (a) What was the average magnitude of the force exerted on the ball by the floor? (b) Calculate the

    asked by hemanth on January 20, 2019
  100. physics help

    A 1240 N uniform beam is attached to a vertical wall at one end and is supported by a cable at the other end. A W = 1970 N crate hangs from the far end of the beamThe angle between the beam and the horizontal is 30 degrees upwards and the angle between the

    asked by maria on November 27, 2010