1. Physics

    When a high-speed passenger train traveling at 161 km/h rounds a bend,the engineer is shocked to see that a locomotive has improperly entered onto the track from a siding and is a distance(D)= 676m ahead.The locomotive is moving at 29.0 km/h.The engineer

    asked by Mapherson on February 19, 2019
  2. Physics

    While you are sitting on a park bench with your friend, you grab his hat and start running in a straight line away from him. Over the first 49.7m, you accelerate at 1.00m/s^2 up to your maximum running speed. You then continue at you maximum running speed

    asked by joane on September 29, 2012
  3. Physics

    At the airport they have people movers (horizontal escalators). Your friend decides to use the people mover and since you've been sitting decide to walk along side. You would like to continue your conversation and thus need to continue moving at the same

    asked by Kelsey on September 16, 2013
  4. Physics

    a train takes 5 minutes to cover a distance of 3 km between two stations p and q . Starting from rest at p , it accelerate at a constant rate to a speed 40 km/h and maintain this speed untill it is brought to rest at q . If train takes 3 times as long to

    asked by Anver on July 7, 2017
  5. physics

    Two 21.0 kg ice sleds are placed a short distance apart, one directly behind the other, as shown in the figure. A 3.42 kg cat, initially standing on sled 1, jumps across to sled 2 and then jumps back to sled 1. Both jumps are made at a horizontal speed of

    asked by anonymus on August 30, 2018
  6. Dover

    a plane at a height of 5000m is travelling ata constant speed of 300m.s. A heat seeking missile is fired at the plane when it is 5000m due east of an airbase. if the missile's speed is 350m.s, will the missile hit the plane before it reaches 9000m due

    asked by Shoun on April 13, 2016
  7. Physics

    A 2.0 kg wood block is launched up a wooden ramp that is inclined at a 25 ∘ angle. The block's initial speed is 14 m/s . The coefficient of kinetic friction of wood on wood is μk=0.200. What vertical height does the block reach above its starting point?

    asked by kitt on October 13, 2016
  8. mlit

    a plane at a height of 5000m is travelling ata constant speed of 300m.s. A heat seeking missile is fired at the plane when it is 5000m due east of an airbase. if the missile's speed is 350m.s, will the missile hit the plane before it reaches 9000m due

    asked by lizzy on January 5, 2013
  9. Physics

    A block is hung by a string from the inside roof of a van. When the van goes straight ahead at a speed of 20.0 m/s, the block hangs vertically down. But when the van maintains this same speed around an unbanked curve (radius = 83.9 m), the block swings

    asked by Thien on October 6, 2012
  10. physics

    A student stands at the edge of a cliff and throws a stone horizontally over the edge with a speed of 12.6 m/s. The cliff is 49.1 m above a flat horizontal beach as shown in the figure. a.How long after being released does the stone strike the beach below

    asked by Help plz on January 24, 2016
  11. Science

    a train takes 5 minutes to cover a distance of 3 km between two stations p and q . Starting from rest at p , it accelerate at a constant rate to a speed 40 km/h and maintain this speed untill it is brought to rest at q . If train takes 3 times as long to

    asked by Anonymous on July 7, 2017
  12. alg

    1. (20 points) Police use the equation to estimate the speed (s) of a car, in miles per hour, based on the length (x), of its skid marks upon sudden braking on dry asphalt. a. Solve this equation for d. b. A motorist is involved in an accident. The skid

    asked by patricia on July 23, 2011
  13. Science guys :)

    hey guys a got a few problems i need help with im really desperate for help they're due soon online :( 1.Suppose that a constant current of 89 mA flows in a conductor. Find the absolute value of the total charge that passes through the conductor in 3

    asked by Zach on August 31, 2005
  14. physical

    A highway of concrete slabs is to be built in the Libyan desert, where the highest air temperature recorded is 57.8 °C. The temperature is 23.1 °C during construction of the highway. The slabs are measured to be 11.7 m long at this temperature. How wide

    asked by itufizik on July 23, 2012
  15. Chemistry

    The amount of energy released by burning a fuel source, measured in energy per mass, is called fuel value. If all the energy obtained from burning 1.3 pounds of butane (fuel value 10.85 kcal/g) is used to heat 122 kg of water at an initial temperature of

    asked by Jordan on February 28, 2011
  16. algebra2

    Sian and Daniel are researching information on earthquakes in the U.S. One of the largest was centered in San Francisco in 1906. It measured 7.8 on the richter scale. a. find the amount of engr. released by the earthquake. b. Sian says the amount of energy

    asked by amber on June 1, 2015
  17. physics

    In searching the bottom of a pool at night, a watchman shines a narrow beam of light from his flashlight, 1.3 m above the water level, onto the surface of the water at a point 2.7m from the edge of the pool. Where does the spot of light hit the bottom of

    asked by Steve on September 7, 2008
  18. AP Chemsitry

    A solution of an unknown monoprotic weak acid was titrated with 0.100 M NaOH. The equivalence point was reached when 37.48 ML of base had been added. From a second buret, exactly 18.74 of 0.100 M HCl were added to the titration solution. The pH was then

    asked by Keith on April 1, 2012
  19. maths

    My kids are stuck on this they've no idea what to do and I can't help them out either! Darren throws a stone from the top of a vertical cliff into the sea below. The trajectory of the stone can be modelled by the quadratic equation y = -(x^2/3)+2x+24 where

    asked by elizabeth on April 20, 2011
  20. Physics

    A flying squid (family Ommastrephidae) is able to "jump" off the surface of the sea by taking water into its body cavity and then ejecting the water vertically downward. A 0.80 kg squid is able to eject 0.32 kg of water with a speed of 20 m/s. (a) What

    asked by xxxxxxx on April 10, 2016
  21. Physics

    A piston in a car engine has a mass of 0.75kg and moves with motion which is approximately simple harmonic. If the amplitude of this oscillation is 10 cm and the maximum safe operating speed of the engine is 6000 revolutions per minute, calculate: a)

    asked by Nazrawi on October 7, 2018
  22. Physics

    A coin is placced 12.0 cm from the axis of a roatating turntable of variable speed. When the speed of the turntable is slowly incraeased, the coin remains fixed on the turntable until a rate of 50 rpm is reached at which point the coin slides off. What is

    asked by Physics on September 5, 2009
  23. Maths

    the speed of light is 3 * 10^ 8m/s. Jupiter is 778 million km from the sun. Calculate the number of minutes it takes for sunlight to reach Jupiter ? A star is 300 lights away from Earth. If the speed of light is 3 * 10^5 km/s. calculate the disatance from

    asked by YOYO on November 26, 2007
  24. Physics

    A coin is placced 12.0 cm from the axis of a roatating turntable of variable speed. When the speed of the turntable is slowly incraeased, the coin remains fixed on the turntable until a rate of 50 rpm is reached at which point the coin slides off. What is

    asked by Physics on September 5, 2009
  25. maths

    danny drove halfway from town p to town q at average speed of 60 km/h. he wants to average 80 km/h for the entire journey. What will his average speed be for the second part of his journey?

    asked by tim on July 27, 2016
  26. math

    A plane traveled 510 mph with the wind and 470 mph against the wind. Find the speed of the plane in still air and the speed of the wind

    asked by QUIZ HELPPP on September 27, 2016
  27. Physics

    create a graph with your data of rotational speed vs radius. independent variable goes on x axis. which is x axis and which is y axis out of radius and rotational speed

    asked by Jo on January 31, 2011
  28. emu

    a bullet of mass ..21kg is fired from a gun of a mass 5.6kg. if gun is recoiled at a speed of 2.5 m/s .What speed must the bullet have as it leaves the gun

    asked by Aisha on November 6, 2013
  29. Physics

    Free Fall: Tara throws a baseball down to Nathan. If she throws it with a speed of 2.0m/s and it lands in Nathan's hand with a speed of 10.0m/s, how far above Nathan is Tara?

    asked by Jane on October 5, 2010
  30. physics

    A diver of mass m drops from a board 12 m above the water surface. Calculate his speed 6m above the water surface. What is the speed of the diver just he strikes the water?

    asked by zah on August 24, 2013
  31. Physics

    This question has me very lost. Two loudspeakers emit sound waves along the x-axis. The sound has maximum intensity when the speakers are 11 cm apart. The sound intensity decreases as the distance between the speakers is increased, reaching zero at a

    asked by Phil on November 29, 2008
  32. physics

    A ball is thrown straight upward. At 4.36 m above its launch point, the ball's speed is one-half its launch speed. What maximum height above its launch point does the ball attain?

    asked by ryan on September 21, 2014
  33. Physics

    A horizontal rifle is fired at a target 47 m away. The bullet falls vertically a distance of 8 cm on the way to the target. (a) What is the speed of the bullet just after it left the rifle? (b) What is the speed of the bullet just before it hits the

    asked by Alex on May 16, 2012
  34. Physics

    A ball is thrown straight upward. At 6.30 m above its launch point, the ball’s speed is one-half its launch speed. What maximum height above its launch point does the ball attain?

    asked by Briana on September 12, 2013
  35. phyics

    A ball is thrown straight upward. At 5.00 m above its launch point, the ball’s speed is one-half its launch speed. What maximum height above its launch point does the ball attain?

    asked by Johnny on October 20, 2013
  36. chemistry(check my work)

    When a reaction mixture with a total volume of 1720 mL that contains 0.605 L of gaseous CO2 measured at STP dissolved in 940 mL of water was stoichiometrically produced as per the balanced equation, how many mol of solid CaCO3 were required? H2SO4(aq) +

    asked by eng on April 2, 2010
  37. Physics

    Assume that the maximum aperture of the human eye, D, is approximately 8 mm and the average wavelength of visible light, λ, is 5.5 x 10-4 mm. a. Calculate the diffraction limit of the human eye in visible light. D = 8 mm = 0.008 m λ = 5.5 x 10-4 mm = 5.5

    asked by vv on September 23, 2013
  38. Physics

    Assume that the maximum aperture of the human eye, D, is approximately 8 mm and the average wavelength of visible light, λ, is 5.5 x 10-4 mm. a. Calculate the diffraction limit of the human eye in visible light. D = 8 mm = 0.008 m λ = 5.5 x 10-4 mm = 5.5

    asked by vv on September 22, 2013
  39. physics

    A motorist drives along a straight road at a constant speed of 15.0 m/s. just as she passes a parked police officer,the officer starts to accelerate at 2.00 m/s^2 to overtake her. assuming the officer maintains this acceleration, a) determine the time it

    asked by kevin on January 16, 2011
  40. physics

    A motorist drives along a straight road at a constant speed of 15.0 m/s. just as she passes a parked police officer,the officer starts to accelerate at 2.00 m/s^2 to overtake her. assuming the officer maintains this acceleration, a) determine the time it

    asked by kevin on January 17, 2011
  41. Chem

    Please tell me if these are right? A mixture of oxygen and helium is prepared for a scuba diver that will descend to 125 feet below the ocean surface. At that depth the diver breathes a gas mixture that has a total pressure of 8atm. If the particle

    asked by Lindsay on November 29, 2010
  42. Phyics

    A Rock Is Thrown Vertically upward with a speed of 12m/s. Exactly 1.00s later a ball is thrown up vertically along the same path with a speed of 18m/s. At what time will they strike each other? so far I got this but it does not seem to be working out for

    asked by Joshua on September 16, 2009
  43. PHYSICS

    A ball of mass 0.15kg is dropped from a height of 1.0m onto a flat surface and rebounds to a height of 0.35m. Calculate: (a) The speed of the ball just before the impact, (b) The speed of the ball just after impact, (c) The change of momentum, (d) The

    asked by urgent help needed on October 28, 2016
  44. Physics

    A bullet of mass 0.06kg is fired horizontally with a muzzle speed of 700 m/s into a pendulums hanging block of mass 2.0kg. The block and the bullet then move up a height, h, above the pendulums equilibrium position. What is the speed of the bullet/block

    asked by Erin on March 15, 2012
  45. Physics

    A ball of mass 0.15kg is dropped from a height of 1.0m onto a flat surface and rebounds to a height of 0.35m. Calculate: (a) The speed of the ball just before the impact, (b) The speed of the ball just after impact, (c) The change of momentum, (d) The

    asked by Valentina on October 27, 2016
  46. Science help! URGENT. Check answers

    1. True or False? A model train traveling at a constant speed around a circular track has a constant velocity. (False) 2.Which of the following would be affected if a soaring eagle changed direction but remained at a constant speed? acceleration only

    asked by Elena on October 15, 2013
  47. physics

    While on a trail, a mountain biker encounters a sandy patch that is 7.1 m long. The speed of the bike entering the patch is 10.1 m/s. If the force exerted by the sand on the bike/biker system (103.8 kg) is 514 N, determine the speed of the biker when

    asked by Kelly on December 10, 2009
  48. Math

    Math 10 pre calc chpt 1 In a basement renovation, the contractor measured the length of a wall in a square room as 18ft.4in. The width of the doorway is 3 ft. The contractor plans to place wood trim along the bottom of each wall. The trim costs 1.69/ft.

    asked by 1 on July 4, 2018
  49. Physics

    I NEED HELP.... I look in my text for an inverse square law and i get G=M1M2/d^2, But im not given a two masses. The repusive force between two ceramic magnets was measured and found to depend on distance, as given in the table. Separation, d (mm) Force,F

    asked by Steven on October 31, 2007
  50. Chemistry

    A particular natural gas consists, in mole percents, of 83.0% CH4, 11.2% C2H6, and 5.8% C3H8. A 385L sample of this gas is measured at 25C and 729mmHg, and is burned in an excess of oxygen. How much heat in kJ is involved in this reaction. I assume you use

    asked by Alex on March 19, 2019
  51. math

    Can someone please check my math questions? My answers are under the questions... I would really appreciate any help Questions~ 16. A car’s speed before a sudden stop can be estimated by the formula S = √(30gk) , where S = speed of the car in mph, g =

    asked by Abby on October 14, 2015
  52. Physics

    A block is hung by a string from the inside roof of a van. When the van goes straight ahead at a speed of 27 m/s, the block hangs vertically down. But when the van maintains this same speed around an unbanked curve (radius = 180 m), the block swings toward

    asked by Julius on March 5, 2011
  53. Dynamics of rigid bodies

    The car is traveling at a speed of 60 mi/hr as it approaches point A. Beginning at A, the car decelerates at a constant 7ft/sec2 until it gets to point B, after which its constant rate of decrease of speed is 3ft/sec2 as it rounds the interchange ramp.

    asked by Anonymous on March 6, 2017
  54. Physics

    A block is hung by a string from the inside roof of a van. When the van goes straight ahead at a speed of 20 m/s, the block hangs vertically down. But when the van maintains this same speed around an unbanked curve (radius = 165 m), the block swings toward

    asked by Moises on October 6, 2012
  55. Physics AP

    A block is hung by a string from the inside roof of a van. When the van goes straight ahead at a speed of 27.8 m/s, the block hangs vertically down. But when the van maintains this same speed around an unbanked curve (radius = 196 m), the block swings

    asked by Gina on February 14, 2011
  56. physics

    A block is hung by a string from the inside roof of a van. When the van goes straight ahead at a speed of 32 m/s, the block hangs vertically down. But when the van maintains this same speed around an unbanked curve (radius = 140 m), the block swings toward

    asked by Fred on October 23, 2010
  57. physics

    A block is hung by a string from the inside roof of a van. When the van goes straight ahead at a speed of 26 m/s, the block hangs vertically down. But when the van maintains this same speed around an unbanked curve (radius = 135 m), the block swings toward

    asked by ANDREW on October 5, 2010
  58. physics

    A block is hung by a string from the inside roof of a van. When the van goes straight ahead at a speed of 27 m/s, the block hangs vertically down. But when the van maintains this same speed around an unbanked curve (radius = 180 m), the block swings toward

    asked by Julius on March 5, 2011
  59. College Physics

    A block is hung by a string from the inside roof of a van. When the van goes straight ahead at a speed of 29 m/s, the block hangs vertically down. But when the van maintains this same speed around an unbanked curve (radius = 135 m), the block swings toward

    asked by Dawn on October 2, 2010
  60. PHYSICS

    A block is hung by a string from the inside roof of a van. When the van goes straight ahead at a speed of 27.8 m/s, the block hangs vertically down. But when the van maintains this same speed around an unbanked curve (radius = 196 m), the block swings

    asked by Gina on February 15, 2011
  61. physics

    A block is hung by a string from the inside roof of a van. When the van goes straight ahead at a speed of 26 m/s, the block hangs vertically down. But when the van maintains this same speed around an unbanked curve (radius = 135 m), the block swings toward

    asked by ZAC on October 6, 2010
  62. physics

    You are driving your car over a circular-shaped bump in the road that has a radius of curvature of 75.9 m. A)If the car is traveling at a constant speed of 18.3 m/s, calculate the apparent weight of your 56.1 kg passenger as you pass over the top of the

    asked by Tammie on February 22, 2014
  63. Physics

    A block is hung by a string from the inside roof of a van. When the van goes straight ahead at a speed of 31 m/s, the block hangs vertically down. But when the van maintains this same speed around an unbanked curve (radius = 145 m), the block swings toward

    asked by Don on November 7, 2012
  64. physics

    You are driving your car over a circular-shaped bump in the road that has a radius of curvature of 75.9 m. A)If the car is traveling at a constant speed of 18.3 m/s, calculate the apparent weight of your 56.1 kg passenger as you pass over the top of the

    asked by name 23 on February 22, 2014
  65. Physics

    A block is hung by a string from the inside roof of a van. When the van goes straight ahead at a speed of 32 m/s, the block hangs vertically down. But when the van maintains this same speed around an unbanked curve (radius = 140 m), the block swings toward

    asked by madeline on October 23, 2010
  66. physics

    Angular diameter of sun is 17" when measured from north pole and south pole of earth. Calculate distance of sun from earth if diameter of earth is 12800km.

    asked by Anonymous on May 21, 2011
  67. Chemistry

    To determine the value of ÄG°f(AgI2–(aq)), a researcher measured the concentrations at equilibrium to be: [I3–]eq = 4.07 M and [I2]eq = [AgI2–]eq = 0.686 M at 298 K. 2 Ag(s) + 2 I3–(aq) 2 AgI2–(aq) + I2(aq) ÄH°f(kJ/mole)/S°(J/k mole/ÄG°f

    asked by Krys on April 17, 2011
  68. physics

    Angular diameter of sun is 17" when measured from north pole and south pole of earth. Calculate distance of sun from earth if diameter of earth is 12800km.

    asked by Anonymous on May 21, 2011
  69. 7th grade math

    A track is 3/4 mile long . The track is measured in units called furlongs. one furlong is equivalent to an 1/8 of a mile. Ho long is the track in furlongs? Thanks! I think it is 3/4 times 1/8 equal 3/32

    asked by please check my work on December 4, 2016
  70. AP Physics

    At a height of 5 meters above the surface of a freshwater lake, a sound pulse is generated. The echo from the bottom of the lake returns to the point of origin 0.140 s later. The air and water temperatures are 20°C. How deep is the lake?

    asked by Alan on February 9, 2011
  71. Earth and Physical Science

    A 901 kg car is traveling north down a country road when a deer crosses in front of the car. By slamming on the breaks, the care is able to decelerate at 4.0 meters per second squared. What is the frictional force between the street and the car?

    asked by Caitlin on February 7, 2011
  72. Math

    A running track is designed with two semicircular ends and two parallel straightaways. If the inner perimeter of the track is to be exactly 400 meters, what are reasonable dimensions for the radius and straightaway of the track? draw picure, justify answer

    asked by Mary on April 22, 2010
  73. physics

    A mass of 2.9 kg is hanging vertically from a string with a length of 2.4 meters. It is then raised to an angle of 50 degrees with the vertical and given some velocity, v. If the string breaks at a tension of 163.8 Newtons, what is the maximum value for v

    asked by Chelsea on October 31, 2012
  74. physics

    A labour is throwing 12 bricks per min from the ground and these just reach the roof which is 3.3 meters high. ifthe weight of each bricks be 3.75 kg then find the horse power with which the labour is working.

    asked by sarsi on September 19, 2013
  75. geometry

    A slide 4.1 meters long makes an angle of 35 degrees with the ground. To the nearest tenth of a meter how far above the ground is the top of the slide. Could someone please explain don't want just answer would like to know how to do the work.

    asked by Brandon on February 19, 2012
  76. Calculus

    Use differentials to estimate the amount of paint needed to apply a coat of paint 0.02 cm thick to a sphere with diameter 40 meters. (Recall that the volume of a sphere of radius r is V=(4/3)πr^3. Notice that you are given that dr=0.02.)

    asked by Henry on October 28, 2015
  77. Math

    A school has a new flag that must be flown at least 52 feet high. The current flagpole is 14.5m tall How many meters taller does the new flagpole need to be? Round to the nearest tenth (one meter is about 328 feet)

    asked by Jenny on October 6, 2016
  78. Physics

    The position of a toy locomotive moving on a straight track along the x-axis is given by the equation: x=t^4-6t^2+9t where x is in meters and t is in seconds. The net force on the locomotive is equal to zero when t is equal to Answer in units of s.

    asked by Jonathan on September 27, 2013
  79. science

    14. A car with a mass of 1,200 kilograms is moving around a circular curve at a uniform velocity of 20 meters per second. The centripetal force on the car is 6,000 newtons. What is the radius of the curve?

    asked by Anonymous on May 22, 2016
  80. Physics

    An object is allowed to fall freely near the surface of an unknown planet. The object falls 80 meters from rest in 5.0 seconds. The acceleration due to gravity on that planet is? Would the answer be 16?

    asked by Hannah on September 27, 2009
  81. Physics

    The road runner drops a boulder from a 53 meter high building. When the block is 14 meters above the ground, the 2 meter tall Wiley Coyote looks up and sees the boulder. How much time does he have to get out of the way?

    asked by Zack on November 3, 2013
  82. Chemisty/Physic

    How can I find the pipe diameter when given the velocity = 1 m/s and the volumetric flow rate = 6000 m^3/day and flow area = 6000 m^2/s So that everything cancels leaving me with meters so I can write my answer in cm.

    asked by Angie on September 13, 2012
  83. physics

    A 60kg wood carving of a gazelle slides under the action of the force shown. What is the normal force? assumin the gazelle starts from rest, how long will it take to move 3 meters?

    asked by antonio on October 25, 2012
  84. Physics

    Lai threw a ball downwards with an initial velocity of 11.0 m/s. What is in meters the displacement of the ball during the 2.9 seconds after she threw it? (don't include units in the answer, use 10.0 m/s2 for g and use the upward direction as positive)

    asked by Savannah on January 13, 2012
  85. Physical Science

    Four balls are dropped from a platform, 20 meters high. One ball is 5k, the other is 10kg, then 20kg, and 40kg. Which ball will experience the GREATEST change in kinetic energy, from platform to ground?

    asked by MadiShiley on May 3, 2011
  86. dynamics

    A ball is thrown so that the motion is defined by the equations x= 5t and y= 2+6t-4.9t^2, where x and y are expressed in meters and t is expressed in seconds. Determine (a) the velocity at t=1s, (b) the horizontal distance the ball travels before hitting

    asked by shiella on March 11, 2018
  87. math

    Russell planted a flowerbedthat is 1.6 square meters. Jackie planted a flower bed that is 16 tenths square meter. Draw a quick picture to model the two pictures

    asked by Miguel on September 9, 2014
  88. Trigonometry Multiple Choice Question please help!

    Viola drives 200 meters up a hill that makes an angle of 9° with the horizontal. To the nearest tenth of a meter, what horizontal distance has she covered? 1,262.8 m 200.4 m 197.5 m 31.3 m Thank you so much! ^_^

    asked by LeXi ;) on February 28, 2012
  89. physics

    a 60 kilogram student sitting on a hardwood floor accelerates at 1.3 meters per second squared when pulled by a 240 newton horizontal force. what is the coefficient of friction between the student and the floor?

    asked by bob on November 21, 2010
  90. lewis

    20 minutes after being launched, a hot-air balloon has risen to an altitude of 300m. the pilot can still see the starting pt on the ground at a 25 degree angle of depression. how many meters is the balloon from the starting pt?

    asked by ki on March 18, 2015
  91. math

    A farmer with 2000 meters of fencing wants to enclose a rectangular plot that borders on a straight highway. If the farmer does not fence the side along the highway, what is the largest area that can be enclosed?

    asked by lulu on October 3, 2011
  92. English

    On a clear day, you can see Ulleongdo form Dokdo because it's only 87.4 km away. -------------------------- (-do means 'island') What does 'it' refer to? Does 'it' refer to 'Ulleongdo'? Or is 'it' an impersonal pronoun referring to 'the distance' as

    asked by rfvv on October 25, 2016
  93. math

    A tennis ball is launched with an initial velocity of 24.5 m/s from the edge of a cliff that is 117.6 meters above the ground. Which quadratic equation could be used to correctly determine when the ball will hit the ground

    asked by sarah on August 4, 2011
  94. physics

    A car is moving down a street at 51 km/h. A child suddenly runs into the street. If it takes the driver 0.97 s to react and apply the brakes, how many meters will the car have moved before it begins to slow down?

    asked by mike on October 3, 2010
  95. physics

    a 2000 kg car rounds a circular turn of radius 20.0 meters. if the road is flat and the coefficient of static friction between the tires and the road is .70, how fast can the car go without skidding

    asked by mallory!!!!!!!!!!!! on January 24, 2010
  96. Physics

    A car is moving down a street at 67 km/h. A child suddenly runs into the street. If it takes the driver 1.26 s to react and apply the brakes, how many meters will the car have moved before it begins to slow down?

    asked by Jake on February 6, 2014
  97. physics

    Am i doing this right? A cannon is shot at a 30 degree angle above the horizontal with a velocity of 240 m/s. What is the range of this shot? Range = Vm^2 sin2(theta) / (g) (240m/s^2)sin(2(30)) / (10ms^2) = 4988 meters?

    asked by #%$ on June 28, 2015
  98. physics

    A car is moving down a street at 51 km/h. A child suddenly runs into the street. If it takes the driver 0.62 s to react and apply the brakes, how many meters will the car have moved before it begins to slow down?

    asked by miranda on October 23, 2012
  99. Math (College Pre-Cal)

    The exact conversion between the English measurement system and the metric system is given by the equation 1 inch= 2.54 cm. Let f(x) be the number of miles in x meters. Find a formula for f(x). Give an exact answer.

    asked by anonymous on September 29, 2013
  100. Math

    A water well drilling rig has dug to a height of –60 meters after one full day of continuous use.a) Assuming the rig drilled at a constant rate, what was the height of the drill after 15 hours?

    asked by MrINeedHelp on October 24, 2018

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