1. calculus

    At noon, ship A is 30 nautical miles due west of ship B. Ship A is sailing west at 25 knots and ship B is sailing north at 16 knots. How fast (in knots) is the distance between the ships changing at 7 PM? (Note: 1 knot is a speed of 1 nautical mile per

    asked by Georgia on October 20, 2009
  2. Math

    At noon, ship A is 30 nautical miles due west of ship B. Ship A is sailing west at 22 knots and ship B is sailing north at 25 knots. How fast (in knots) is the distance between the ships changing at 6 PM? (Note: 1 knot is a speed of 1 nautical mile per

    asked by Ramin on October 9, 2017
  3. calculus 1

    At noon, ship A is 30 nautical miles due west of ship B. Ship A is sailing west at 18 knots and ship B is sailing north at 19 knots. How fast (in knots) is the distance between the ships changing at 3 PM? (Note: 1 knot is a speed of 1 nautical mile per

    asked by mona on March 25, 2010
  4. Physics

    A block of mass m 1 sits at rest on a table over a hole in the table. From below the table, a bullet of mass m 2 is fired vertically upwards into the block. The bullet imbeds itself in the block. The block and bullet rise to a maximum height h. What is the

    asked by Jason on August 6, 2012
  5. Physics

    Two stones are thrown simultaneously, one straight upward from the base of a cliff and the other straight downward from the top of the cliff. The height of the cliff is 6.80 m. The stones are thrown with the same speed of 9.05 m/s. Find the location (above

    asked by Jackie Li on October 1, 2012
  6. APphysics

    During the launch from a board, a divers angulad speed about her center of mass changes from zero to 5.4 rad/s in 450 ms. Her rotational inertia about her center of mass is 12 kg times m^2. During launch, what was the magnitude of her average angular

    asked by ed on January 28, 2008
  7. PHYSICS

    A Boy Stand At A Certain Distance From A Large Building And Blow A Whitle After 2.3s He Hear It Echo.He Move 50m Toward The Building And Blow He Whitle Again, This Time It Echo Reach Him After 2.0s.Calculate The(1)boy Original Distance From The Building

    asked by DIMKA SULEIMAN on July 23, 2018
  8. calculus 1

    At noon, ship A is 20 nautical miles due west of ship B. Ship A is sailing west at 21 knots and ship B is sailing north at 18 knots. How fast (in knots) is the distance between the ships changing at 5 PM? (Note: 1 knot is a speed of 1 nautical mile per

    asked by mona on March 25, 2010
  9. Math!

    At noon, ship A is 50 nautical miles due west of ship B. Ship A is sailing west at 25 knots and ship B is sailing north at 16 knots. How fast (in knots) is the distance between the ships changing at 6 PM? (Note: 1 knot is a speed of 1 nautical mile per

    asked by <3 on June 4, 2009
  10. physics

    An astronaut in a spacecraft looks out her window and observes a comet travel in the opposite direction at a relative speed of 237 m/s. The velocity of the spacecraft is 114 m/s directly away from the sun. What is the comet's velocity relative to the sun?

    asked by alex on June 15, 2015
  11. calculus 1

    At noon, ship A is 50 nautical miles due west of ship B. Ship A is sailing west at 16 knots and ship B is sailing north at 17 knots. How fast (in knots) is the distance between the ships changing at 5 PM? (Note: 1 knot is a speed of 1 nautical mile per

    asked by Anonymous on March 25, 2010
  12. Calculus

    At noon, ship A is 20 nautical miles due west of ship B. Ship A is sailing west at 22 knots and ship B is sailing north at 18 knots. How fast (in knots) is the distance between the ships changing at 4 PM? (Note: 1 knot is a speed of 1 nautical mile per

    asked by Anonymous on October 31, 2010
  13. Calculus

    At noon, ship A is 10 nautical miles due west of ship B. Ship A is sailing west at 19 knots and ship B is sailing north at 15 knots. How fast (in knots) is the distance between the ships changing at 4 PM? (Note: 1 knot is a speed of 1 nautical mile per

    asked by Anonymous on April 3, 2010
  14. physics

    A camel sets out to cross the desert, which is 49.8 km wide in the north-south direction. The camel walks at the uniform speed 2.64 km/hr along a straight line in the direction 50.1 north of East (only the camel knows why he chose that particular

    asked by Anonymous on October 23, 2012
  15. calculus

    (1 pt) At noon, ship A is 50 nautical miles due west of ship B. Ship A is sailing west at 15 knots and ship B is sailing north at 21 knots. How fast (in knots) is the distance between the ships changing at 4 PM? (Note: 1 knot is a speed of 1 nautical mile

    asked by bill nye on March 10, 2009
  16. Calculus Please help!

    At noon, ship A is 50 nautical miles due west of ship B. Ship A is sailing west at 18 knots and ship B is sailing north at 23 knots. How fast (in knots) is the distance between the ships changing at 3 PM? (Note: 1 knot is a speed of 1 nautical mile per

    asked by ALI on February 28, 2014
  17. Calculus

    At noon, ship A is 20 nautical miles due west of ship B. Ship A is sailing west at 23 knots and ship B is sailing north at 17 knots. How fast (in knots) is the distance between the ships changing at 5 PM? (Note: 1 knot is a speed of 1 nautical mile per

    asked by Samuel on March 1, 2010
  18. PLEASE HELP Math

    At noon, ship A is 40 nautical miles due west of ship B. Ship A is sailing west at 24 knots and ship B is sailing north at 22 knots. How fast (in knots) is the distance between the ships changing at 6 PM? (Note: 1 knot is a speed of 1 nautical mile per

    asked by Randall on March 15, 2009
  19. physics

    a stone is thrown vertically upward an initial velocity of 12m/s from the top of a building . it takes 3.4s for the stone to hit the ground a. find the height of the building b. find the maximum height that the stone will reach c. find the speed of the

    asked by khadija on September 23, 2016
  20. science

    A pistol that fires a signal flare gives the flare an initial speed of 180m/s. Air resistance is ignored. (a)If the flare is fired at an angle of 55° above the horizontal, what is the horizontal range? (b)If the flare is fired at the same angle over the

    asked by Gibson on April 5, 2016
  21. Cal 1

    (1 pt) At noon, ship A is 50 nautical miles due west of ship B. Ship A is sailing west at 20 knots and ship B is sailing north at 23 knots. How fast (in knots) is the distance between the ships changing at 5 PM? (Note: 1 knot is a speed of 1 nautical mile

    asked by TJ on November 3, 2010
  22. Physics

    If our planet is travelling at 10000 mph (just using hypothetical numbers) and you launched a rocket into space at 10000 mph (ignoring the planets rotational speed to keep this simple) on the same exact path the planet is moving, would the rocket be moving

    asked by Will on May 28, 2016
  23. Calculus

    At noon, ship A is 50 nautical miles due west of ship B. Ship A is sailing west at 19 knots and ship B is sailing north at 24 knots. How fast (in knots) is the distance between the ships changing at 3 PM? (Note: 1 knot is a speed of 1 nautical mile per

    asked by Alessandra on October 27, 2014
  24. calc

    At noon, ship A is 30 nautical miles due west of ship B. Ship A is sailing west at 17 knots and ship B is sailing north at 16 knots. How fast (in knots) is the distance between the ships changing at 6 PM? (Note: 1 knot is a speed of 1 nautical mile per

    asked by john smit on October 29, 2014
  25. math

    At noon, ship A is 40 nautical miles due west of ship B. Ship A is sailing west at 18 knots and ship B is sailing north at 23 knots. How fast (in knots) is the distance between the ships changing at 4 PM? (Note: 1 knot is a speed of 1 nautical mile per

    asked by adrienne on November 7, 2009
  26. Calc

    At noon, ship A is 50 nautical miles due west of ship B. Ship A is sailing west at 15 knots and ship B is sailing north at 18 knots. How fast (in knots) is the distance between the ships changing at 6 PM? (Note: 1 knot is a speed of 1 nautical mile per

    asked by Heather on February 19, 2012
  27. calculus

    At noon, ship A is 10 nautical miles due west of ship B. Ship A is sailing west at 17 knots and ship B is sailing north at 20 knots. How fast (in knots) is the distance between the ships changing at 4 PM? (Note: 1 knot is a speed of 1 nautical mile per

    asked by Parker on September 24, 2009
  28. calculus

    At noon, ship A is 10 nautical miles due west of ship B. Ship A is sailing west at 17 knots and ship B is sailing north at 20 knots. How fast (in knots) is the distance between the ships changing at 4 PM? (Note: 1 knot is a speed of 1 nautical mile per

    asked by Parker on September 24, 2009
  29. Math

    At noon, ship A is 30 nautical miles due west of ship B. Ship A is sailing west at 16 knots and ship B is sailing north at 22 knots. How fast (in knots) is the distance between the ships changing at 7 PM? (Note: 1 knot is a speed of 1 nautical mile per

    asked by Salman on October 16, 2009
  30. Calculus

    At noon, ship A is 30 nautical miles due west of ship B. Ship A is sailing west at 23 knots and ship B is sailing north at 17 knots. How fast (in knots) is the distance between the ships changing at 4 PM? (Note: 1 knot is a speed of 1 nautical mile per

    asked by Anonymous on July 28, 2013
  31. Maths

    At noon, ship A is 30 nautical miles due west of ship B. Ship A is sailing west at 16 knots and ship B is sailing north at 22 knots. How fast (in knots) is the distance between the ships changing at 7 PM? (Note: 1 knot is a speed of 1 nautical mile per

    asked by Salman on October 15, 2009
  32. CALCULUS

    At noon, ship A is 40 nautical miles due west of ship B. Ship A is sailing west at 23 knots and ship B is sailing north at 19 knots. How fast (in knots) is the distance between the ships changing at 5 PM? (Note: 1 knot is a speed of 1 nautical mile per

    asked by CRYSTAL on October 24, 2011
  33. math

    At noon, ship A is 40 nautical miles due west of ship B. Ship A is sailing west at 16 knots and ship B is sailing north at 17 knots. How fast (in knots) is the distance between the ships changing at 5 PM? (Note: 1 knot is a speed of 1 nautical mile per

    asked by bob dylan on March 26, 2010
  34. CAL

    At noon, ship A is 30 nautical miles due west of ship B. Ship A is sailing west at 21 knots and ship B is sailing north at 15 knots. How fast (in knots) is the distance between the ships changing at 4 PM? (Note: 1 knot is a speed of 1 nautical mile per

    asked by LAURA on July 10, 2011
  35. Physics

    A transverse wave 1.1cm in amplitude is propagating on a string; the wave frequency is 44 Hz. The string is under 23-N tension and has mass per unit length of 16g/m . What is the wave speed? What I've done: using sqrt(Tension/mass_per_unit):

    asked by Tommy on March 5, 2015
  36. Physics

    A car accelerates from rest with a uniform acceleration of 1.7m/s for 10 seconds, its acceleration then reduces by 0.3m/s for 20 seconds of the motion, it then maintains the speed attained for another 20 seconds after which it decelerates to rest within 10

    asked by Kelly on November 11, 2015
  37. Calculus

    At noon, ship A is 10 nautical miles due west of ship B. Ship A is sailing west at 18 knots and ship B is sailing north at 22 knots. How fast (in knots) is the distance between the ships changing at 6 PM? (Note: 1 knot is a speed of 1 nautical mile per

    asked by Sam on October 26, 2010
  38. calculus

    At noon, ship A is 10 nautical miles due west of ship B. Ship A is sailing west at 15 knots and ship B is sailing north at 15 knots. How fast (in knots) is the distance between the ships changing at 3 PM? (Note: 1 knot is a speed of 1 nautical mile per

    asked by Anonymous on November 4, 2012
  39. calculus

    At noon, ship A is 10 nautical miles due west of ship B. Ship A is sailing west at 15 knots and ship B is sailing north at 15 knots. How fast (in knots) is the distance between the ships changing at 3 PM? (Note: 1 knot is a speed of 1 nautical mile per

    asked by Anonymous on November 4, 2012
  40. Calc

    At noon, ship A is 30 nautical miles due west of ship B. Ship A is sailing west at 16 knots and ship B is sailing north at 15 knots. How fast (in knots) is the distance between the ships changing at 7 PM? (Note: 1 knot is a speed of 1 nautical mile per

    asked by Pierre on October 28, 2010
  41. Math

    The Andromeda Constellation is the furthest object we can see with the unaided eye. It is about 22,000,000,000,000,000 km from Earth. Light travels in space at a speed of about 300,000 km/s. Calculate how many years light takes to reach Earth from the

    asked by Larry on September 15, 2008
  42. Biophysics

    Consider the flow of blood through a large horizontal artery with 1.0 mm of diameter. The artery has a smooth reduction to an artery 0.5 mm in diameter. If the pressure of the blood in the larger artery is 8.00 x 104 Pa and the pressure in the smaller

    asked by Anonymous on May 8, 2017
  43. Physics

    AM radio signals are broadcast at frequencies between 540 kHz and 1585 kHz (kilohertz) and travel 3.0 X 10^8 m/s. a. What is the range of the wavelengths for the signals? (from shortest to longest). b. FM frequencies range between 88MHz and 108 MHz

    asked by kara on March 6, 2012
  44. calculus

    At noon, ship A is 30 nautical miles due west of ship B. Ship A is sailing west at 25 knots and ship B is sailing north at 25 knots. How fast (in knots) is the distance between the ships changing at 6 PM? (Note: 1 knot is a speed of 1 nautical mile per

    asked by remy on May 14, 2012
  45. math

    The Murphy family just drove 300 miles to visit their grandparents. Mr. Murphy drove 70 mph for 65% of the trip and 35 mph or less for 20% of the trip that was left. Assuming that Mr. Murphy never went over 70 mph, how many miles did he travel at a speed

    asked by Katie on October 22, 2014
  46. calculus

    At noon, ship A is 10 nautical miles due west of ship B. Ship A is sailing west at 15 knots and ship B is sailing north at 15 knots. How fast (in knots) is the distance between the ships changing at 3 PM? (Note: 1 knot is a speed of 1 nautical mile per

    asked by Anonymous on November 4, 2012
  47. calculus

    At noon, ship A is 20 nautical miles due west of ship B. Ship A is sailing west at 24 knots and ship B is sailing north at 16 knots. How fast (in knots) is the distance between the ships changing at 3 PM? (Note: 1 knot is a speed of 1 nautical mile per

    asked by jasmin on October 10, 2017
  48. Physics

    1. A small plane can travel at 200 km/h in still air. If a 50.0 km/h wind is coming from the east, determine the ground velocity of the plane if the pilot keeps the plane pointed [N]. 2. A pilot is flying from City A to City B which is 300 km [NW]. If the

    asked by Corey Brown on April 24, 2014
  49. Physics Grade 12

    Heather is sitting on her car at a spotlight. At the instant light turns green, she starts accelerating at 2.2 m/s/s. At the same moment a truck rumbles past her car going a constant speed of 12.2 m/s. Heather is infuriated at being passed by a truck and

    asked by Annie on September 17, 2014
  50. Physics

    A golf ball strikes a hard, smooth floor at an angle of 20.7 ° and, as the drawing shows, rebounds at the same angle. The mass of the ball is 0.0528 kg, and its speed is 40.2 m/s just before and after striking the floor. What is the magnitude of the

    asked by John on October 14, 2015
  51. Physics fun

    A golf ball strikes a hard, smooth floor at an angle of 33.1 ° and, as the drawing shows, rebounds at the same angle. The mass of the ball is 0.0172 kg, and its speed is 59.2 m/s just before and after striking the floor. What is the magnitude of the

    asked by Sanz on October 19, 2014
  52. physics

    A golf ball strikes a hard, smooth floor at an angle of θ = 26.4° and, as the drawing shows, rebounds at the same angle. The mass of the ball is 0.047 kg, and its speed is 45 m/s just before and after striking the floor. What is the magnitude of the

    asked by Anonymous on January 12, 2015
  53. PHYSICS H!!!!

    NOT SURE WUT I M DOING WRONG--- SO HEREZ THE ? PLEEZE HELP ME!!! ----A projectile is shot from the edge of a cliff h = 225 m above ground level with an initial speed of v0 = 155 m/s at an angle of 37.0° with the horizontal Determine the range X of the

    asked by Kavi on October 11, 2010
  54. Physics

    The two masses shown in the figure are each initially 1.80 m above the ground, and the massless frictionless pulley is fixed 4.8 m above the ground. (mA = 1.5 kg and mB = 3.4 kg.) What maximum height does the lighter object reach after the system is

    asked by Megan on September 21, 2014
  55. physics

    a parallel plate capacitor has an area of 5cm^2 and a capacitance of 3.5PF. the capacitor is connected to a 12v battery .after the capacitor is completely charge up the battery is removed. a)what must be the separation of the plates and the charge density

    asked by ruth on February 15, 2016
  56. physics

    Determine the fraction of the energy radiated by the sun in the visible region of the spectrum (350 nm to 700 nm). (Assume the sun's surface temperature is 5800 K.) any help is always appreciated thanks Solve by integrating the 5800 K blackbody function

    asked by --pat-- on August 5, 2007
  57. Physics

    A particular piano wire has middle C (261.7 Hz) for its second harmonic. The wire's length is 2.7m. What is the speed of the wave in the wire? If the wire has 270 lbs of tension what is its linear density? What is the wavelength of this tone emitted into

    asked by Shelby on December 5, 2013
  58. Physics

    A car of mass 1300 kg is driving along a road at speed of 28m/s. As it approaches some traffic lights, the lights change to red and the driver applies his brakes causing the car to skid. The frictional force between the skidding tyres and the road is 0.8

    asked by Sean on October 25, 2015
  59. History! Check my answers

    Question #5: What was Oran Roberts' plan to fix the government? A. Control big business B. Create more industry. C. Follow strict fiscal conservatism. D. Open ports for trade. Question #6: How did railroads influence the agriculture in Texas? Select all

    asked by Plz help Ms. Sue on March 14, 2018
  60. Science

    ~~~~~~~~~~~~~~~~~~~~~~~~~Choices *Extra Words In The Word Box (Will Be Leftovers)* -Landfills -Limiting Factor -Non~point Source -Habitat Destruction -Stop -Migration -Biodiversity -Carbon Dioxide -Reverse -Carrying Capacity -Commensalism -Selective

    asked by Abby on December 1, 2014
  61. physicccs!

    A paraglider is flying horizontally at a constant speed. Assume that only two forces act on it in the vertical direction, its weight and a vertical lift force exerted on its wings by the air. The lift force has a magnitude of 1900 N. For both questions,

    asked by hy on December 4, 2010
  62. English

    I have to write a final paragraph for this story.Please help! Battle of Manassas By Callie Hackett Everbody thouht that today,July 21,was going to be a wonderful day,since we were going to have a quick and easy battle,but that all changed.That morning I

    asked by Callie on December 8, 2007
  63. physics

    A 755 N diver drops from a board 10.0m above the water's surface.Find the diver's speed 5.00 m above the water's surface. Then find the diver's speedjust before striking the water.

    asked by hannah on November 5, 2014
  64. Motion

    Can sumone explain wot linear motion is? Wot's the opposite of linear motion? THX Linear motion is motion is a constant direction, i.e., along a straight line. The speed may change but the direction may not. Motion that is not linear is called curvilinear.

    asked by Mike on June 25, 2005
  65. Physics

    A car is travelling along a highway with a speed of 25 m/s when the driver sees an obstruction 1.80*10^2 m directly ahead. It takes the driver 0.80s to react and begin braking. a) How far does the car travel before it begins to slow down? b) How long will

    asked by Mike on March 4, 2013
  66. Physics

    At serve, a tennis player aims to hit the ball horizontally. What minimum speed is required for the ball to clear the 0.91 m high net about L = 15.1 m from the server if the ball is "launched" from a height of H = 2.55 m? How far from the end of the

    asked by Andy on February 5, 2012
  67. AP PHYSICS MECH.

    In Figure 9-62, block 2 (mass 1.3 kg) is at rest on a frictionless surface and touching the end of an unstretched spring of spring constant 160 N/m. The other end of the spring is fixed to a wall. Block 1 (mass 2.1 kg), traveling at speed v1 = 4.0 m/s,

    asked by vm on February 14, 2011
  68. Physics

    An object m of mass m=1kg is attached to a string that passes through a hole in the center of a table. The object m moves in a circle of radius r=1.3m. An object M of mass M=2.1kg is tied to the other end of the string, and hangs vertically beneath the

    asked by Alex on October 10, 2011
  69. Physics

    1.) jet plane traveling 1800 km/h (500 m/s) pulls out of a dive by moving in an arc of radius 6.00 km. What is the plane's acceleration in g's? 6.) A child on a merry -go-round is moving with a speed of 1.35 m/s when 1.20 m from the center of the

    asked by JT on March 2, 2016
  70. economics

    wireless high speed internet is provided for free in the airport of the city of communityville a)At first, only a few people use the service. What type a good is this and why? b) Eventually, as more find out about the service and start using it, the spend

    asked by Mankiw on January 5, 2012
  71. Math

    A jet is flying through wind blowing 55mi/h at a bearing (clockwise from north) of 35°. The jet is flying with a speed of 550 mi/h at a bearing of 65°. Find the resultant of the planes velocity vector and the winds velocity vector. Also find its

    asked by Adam on February 23, 2016
  72. 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
  73. physics

    A Hollywood Daredevil plans to jump a canyon on a motorcycle. There is a 15 m drop and the horizontal distance originally planned was 60 m but it turns out the canyon is really 69.6 m across. If he desires a a 3.2 second flight time a. what is the correct

    asked by Andy on September 11, 2009
  74. physics

    A ball is thrown upward. After reaching a maximum height, it continues falling back to- ward Earth. On the way down, the ball is caught at the same height at which it was thrown upward.If the time (up and down) the ball remains in the air is 2.3 s, find

    asked by margaret on September 15, 2011
  75. Physics

    A tennis player stands 15.0m from the net. They hit a ball from a height of 2.50m above the ground so that initially it has a horizontal velocity directed parallel to the ground toward the net. What speed does the ball have to have to just clear the net

    asked by Mercedes on September 18, 2014
  76. Algebra

    A.Driving from El Paso to San Antonia on a bus ...560 miles traveling at avg speed of 60 miles per hr how do I make a graph with the time & distance. B. have to estimate distance bus tvls in 2 hrs...2 3/4 hrs...3.5 hrs...7.25 hrs.. C.need to describe in

    asked by Carolyn on August 27, 2012
  77. mat

    A family left their house in two cars at the same time. One car traveled at an average of 7 miles per hour faster than the other. When the first car arrived at the destination after 5 & 1/2 hours of driving, both cars had driven 599.5 miles. If the second

    asked by smith on January 24, 2017
  78. physics

    A Hollywood Daredevil plans to jump a canyon on a motorcycle. There is a 15 m drop and the horizontal distance originally planned was 60 m but it turns out the canyon is really 69.6 m across. If he desires a a 3.2 second flight time a. what is the correct

    asked by Andy on September 12, 2009
  79. Math

    WHat is the awnser to this question in IXL? Read the following description of a relationship: Cassie started downloading a movie on her phone, but lost connection after 61 MB had downloaded. She finished downloading at home at a speed of 99 MB per second.

    asked by Ella on April 24, 2018
  80. physics

    Consider again the problem of a car traveling along a banked turn. Sometimes roads have a "reversed" banking angle. That is, the road is tilted "away" from the center of curvature of the road. If the coefficient of static friction between the tires and the

    asked by tom on September 21, 2010
  81. Physics

    A potter’s wheel with rotational inertia of 45 kg m2, is spinning freely at 40 rpm. The potter drops a lump of clay onto the wheel where it sticks a distance 1.2 m from the rotational axis at the wheel’s center. If the subsequent angular speed of the

    asked by Sarah on June 29, 2009
  82. Science

    1.)Which of the following are chemical changes? A.)Boiling Of Water B.)Melting A Cube of ice C.)Dissolving 10 grams of salt in water D.)Splitting water into hydrogen and oxygen 2) What is the mass of water that results from combining 2.0g of hydrogen with

    asked by #FreeGucci on March 2, 2016
  83. chemistry

    The postulates of the Bohr model of the hydrogen atom can be stated as follows: I. The electron can exist only in discrete states each with a definite energy. II. The electron can exist only in circular orbits. III. The angular momentum of the electron is

    asked by anonymous on December 30, 2009
  84. physics

    help please A sailboat is traveling east at 8.0 m/s. A sudden gust of wind gives the boat an acceleration a = (1.30 m/s2 35° north of east). What is the boat's speed 10.0 seconds later when the gust subsides? What is the boat's direction (in deg) 10.0

    asked by ..... on September 26, 2011
  85. physics

    croquet ball must have a set mass of 0.50 kg. a red ball moving at 10.0 m/s, strikes an at-rest green ball head on. The red ball continues moving at 1.5 m/s after it hits the green ball. What is the final speed of the green ball?

    asked by Jean on May 15, 2014
  86. Physics

    A cat crouches on the floor, at a distance of 1.6 m from a desk chair of height .45 m. The cat jumps onto the chair, landing with zero vertical velocity. The desk chair has frictionless coasters and rolls away when the cat lands. The mass of the cat is 5.7

    asked by Michael on April 12, 2009
  87. algebra

    The horsepower (hp) that a shaft can safety transmit varies jointly with its speed (in revolutions per minute, or rpm) and the cube of the diameter. If a shaft of a certain material 2 in in diameter can transmit 36 hp at 75 rpm, what diameter must the

    asked by Wen on October 3, 2011
  88. physics (thxs again)

    Thank you for the help :) A certain sample carries a current of 4A when the potential difference is 2V and a current of 10A when the potential difference is 4V. This samples is: a) obeys ohm's law b) has a resistance of 0.5 ohms at 1V c) has a resistance

    asked by susan on March 14, 2007
  89. physical Science

    The Mass Of A Minibus with The Driver is 1500 kg.the Driver Is Moving At A Speed Of 30 m.s When He Notices That The traffic light Ahead Have turned To red.he Applies A Force Of 9000N on the brake pedal. A)calculate his deceleration if the taxi is empty

    asked by vuyo on March 10, 2013
  90. Math

    The time T required to drive a fixed distance varies inversely as the speed r. it takes five hours at 60 mph to drive a fixed distance. how long would it take to drive the fixed distance at 40 mph?

    asked by Maya on February 15, 2016
  91. English/Reading

    Read the following statements and then determine whether they are facts, unsound opinions, sound opinions, or authoritative opinions. Select the correct answer for each statement. Are any of these correct/incorrect? If so please help. 1.)Due to Einstein's

    asked by Matt on June 13, 2010
  92. Physics

    An arrow is shot from a height of 1.5 m toward a cliff of height . It is shot with a velocity of 30 m/s at an angle of 60 deg above the horizontal. It lands on the top edge of the cliff 4.0 s later. (a) What is the height of the cliff? (b) What is the

    asked by Jeff on January 31, 2016
  93. Physics

    An 1800-kg car starting from rest accelerates constantly during the first 9.50 s of its motion. If the force acting on the car is 2150 N, what is the car;s speed at the end of this time? 2150 N = 1800 kg. (a) a = 1.194 (1.194)(9.5 s) = 11.347 m/s correct?

    asked by Fred on October 3, 2006
  94. Physical science

    A golfer on a level fairway hits a ball at an angle of 42* to the horizontal that travels 100 yd before striking the ground. He then hits another ball from the same spot with the same speed, but at a different angle. This ball also travels 100 yd. At what

    asked by Anonymous on September 29, 2016
  95. College Physics

    A 4.55-kg ball of clay is thrown downward from a height of 3.13 m with a speed of 4.41 m/s onto a spring with k = 1690 N/m. The clay compresses the spring a certain maximum amount before momentarily stopping. a) Find the maximum compression of the spring.

    asked by Emma on February 20, 2011
  96. Physics

    A plane directly east at a velocity of 860 km/h for 45 min and then travels directly west with a velocity of 720 km/h for 1h and 30 min. Find the following values for this plane, expressed in km and km/h: a) Total displacement b) Total distance c) Average

    asked by Student12 on March 16, 2017
  97. math please help

    The speed of a moving sidewalk at an airport is 6 ​ft/sec. A person can walk 42 ft forward on the moving sidewalk in the same time it takes to walk 10 ft on a nonmoving sidewalk in the opposite direction. At what rate would a person walk on a

    asked by madison on October 24, 2016
  98. Physics

    A golfer on a level fairway hits a ball at an angle of 25° to the horizontal that travels 103 yd before striking the ground. He then hits another ball from the same spot with the same speed, but at a different angle. This ball also travels 103 yd. At what

    asked by Samantha on August 31, 2018
  99. physics

    A soccer ball is kicked with an initial speed of 10.8 m/s in a direction 24.9° above the horizontal. Calculate the magnitude of its velocity 0.310 s after being kicked. What was its direction? Calculate the magnitude of its velocity 0.620 s after being

    asked by Anonymous on September 5, 2013
  100. physics

    A soccer ball is kicked with an initial speed of 10.8 m/s in a direction 24.9° above the horizontal. Calculate the magnitude of its velocity 0.310 s after being kicked. What was its direction? Calculate the magnitude of its velocity 0.620 s after being

    asked by Anonymous on September 5, 2013

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