# really need help, i have no idea how to answer this question ! A stone is thrown off a cliff. it reaches a maximum height of 30m after 2 seconds, then falls into the water below. it hits the water

87,366 questions
1. ## GRAMMAR - MT

Proofreading. Clean up the following sentences by identifying and correcting misspellings and misused/incorrect words. QUESTION: 1.Urolithiasis is another name for one of the following: uretral stone, kidney stone, or renil stone. Medical word building

asked by Leslie-To:Writeacher on July 16, 2011
2. ## English

To answer the question below, use an idea that you generated in Part 2 of Lesson 2 or come up with a new idea. In the text box provided below indicate the following; The writing idea The kinds of questions you will be writing (Informational , Personal, or

asked by Nannielee on February 14, 2012
3. ## 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
4. ## machanics\

can u tell me what formula i should be using to answer this question? If a stone falls past a bird on a ledge moving at 4 m/s, how fast will the stone be movingjust before it hits the ground below 9 seconds later? A. 92.2 m/s B. 48.2 m/s C. 352.8 m/s D. 36

asked by me on May 3, 2010
5. ## machanics

can u tell me what formula i should be using to answer this question? If a stone falls past a bird on a ledge moving at 4 m/s, how fast will the stone be movingjust before it hits the ground below 9 seconds later? A. 92.2 m/s B. 48.2 m/s C. 352.8 m/s D. 36

asked by me on May 2, 2010
6. ## physics

An inquisitive physics student and mountain climber climbs a 50.0m high cliff that overhangs a calm pool of water. He throws two stones vertically downward, 1.00 s apart, and observes that they cause a single splash. The first stone has an initial speed of

asked by Anonymous on March 30, 2016
7. ## English

1. Part A-which pair of words best describes the speaker's attitude toward elements of nature in "wind and water and stone"? A. ignorant and uncaring B.joyful and loving C.angry and scared D.calm and accepting*** Part B-Which line from the poem best

asked by Anonymous on February 15, 2018
8. ## Science

Miguel is skipping rocks across the surface of a lake. After he throws it, each stone goes through the following motions: I. the stone moves toward the water II. the stone hits the surface of the water and bounces off III. gravity pulls the stone back

asked by Lovely Mallory on March 20, 2013
9. ## physics

A stone with mass m = 2.3 kg is thrown vertically upward into the air with an initial kinetic energy of 190 J. The drag force acting on the stone throughout its flight is constant, independent of the velocity of the stone, and has a magnitude of 2.3 N.

asked by Katie on February 22, 2012
10. ## PSU

A 2.3kg stone is thrown from ground directly upward. the maximum height reached by the stone is 45m. Neglecting air resistance, a) with which initial speed was the stone thrown? b)what is the flight time of the stone until it hits the ground again? c)what

asked by Abdelaziz on October 26, 2016
11. ## physics

A boy drops a stone-A, down from a cliff 480 meters high, next he throws a stone-B, 1 second later - at what initial velocity was the stone-B be thrown so as to meet the stone-A on ground at the same time? g=10 m/s2.

asked by alex on June 21, 2011
12. ## Physics - Projectile Motion

While Hiking in the wilderness, you come to the top of a cliff that is 60.0m high. you throw a stone from the cliff, giving it an initial velocity of 21m/s at 35deg above the horizontal. How far from the base of the cliff does the stone land? (85m) I tried

asked by Shaila on August 19, 2010
13. ## Physics 1

At t = 0, a stone is dropped from a cliff above a lake; 1.3 seconds later another stone is thrown downward from the same point with an initial speed of 33 m/s. Both stones hit the water at the same instant. Find the height of the cliff. No idea how to get

asked by PhysicsGuy on September 20, 2011
14. ## Uniswa

A stone thrown from the top of a building which is 30m is given an initial velocity 20m/s verticaly upward.the stone misses the edge of the building on its way down. A,what is the velocity of the stone after 1second,n after 3seconds. B,find the maximum

asked by Mancoba on February 16, 2011
15. ## Physics

A girl standing on a bridge drops a stone over the side of the bridge. The stone strikes the water below the bridge 5.00s after the stone is dropped. When the stone hits the water, what is the displacement of the stone from the point where the stone was

asked by Anonymous on October 16, 2018

I am having hard time with this question. What are the possible dimensions of the Khufu pyramid, based on the information (asking height, side lengths, slant height) " According to this site 115,000-200,000 casing stones were used The stone blocks usually

asked by ed on April 18, 2018
17. ## math help please !!!

i really neeed help, i have no idea how to answer this question ! i tried everything i know! A stone is thrown off a cliff. it reaches a maximum height of 30m after 2 seconds, then falls into the water below. it hits the water after 5 seconds a) how high

asked by melissa on May 17, 2011
18. ## math

really need help, i have no idea how to answer this question ! A stone is thrown off a cliff. it reaches a maximum height of 30m after 2 seconds, then falls into the water below. it hits the water after 5 seconds a) how high above the water is the cliff (

asked by melissa on May 16, 2011
19. ## math

i really need help, i have no idea how to answer this question ! A stone is thrown off a cliff. it reaches a maximum height of 30m after 2 seconds, then falls into the water below. it hits the water after 5 seconds a) how high above the water is the cliff

asked by melissa on May 15, 2011
20. ## math

really need help, i have no idea how to answer this question ! A stone is thrown off a cliff. it reaches a maximum height of 30m after 2 seconds, then falls into the water below. it hits the water after 5 seconds a) how high above the water is the cliff (

asked by melissa on May 16, 2011
21. ## physics

While standing at the edge of the roof of a building, you throw a stone upward with an initial speed of 6.93 m/s. The stone subsequently falls to the ground, which is 17.1 m below the point where the stone leaves your hand. At what speed does the stone

asked by unknwon on October 10, 2014
22. ## physics

While standing at the edge of the roof of a building, you throw a stone upward with an initial speed of 7.53 m/s. The stone subsequently falls to the ground, which is 14.7 m below the point where the stone leaves your hand. At what speed does the stone

asked by mt on May 2, 2013
23. ## physics

While standing at the edge of the roof of a building, you throw a stone upward with an initial speed of 7.65 m/s. The stone subsequently falls to the ground, which is 11.1 m below the point where the stone leaves your hand. At what speed does the stone

asked by Jordan on September 7, 2015
24. ## Physics

While standing at the edge of the roof of a building, you throw a stone upward with an initial speed of 6.87 m/s. The stone subsequently falls to the ground, which is 13.5 m below the point where the stone leaves your hand. At what speed does the stone

asked by Anonymous on September 21, 2016
25. ## algebra

If a stone is tossed from the top of a 310 meter building the height of the stone as a function of time is given by h(t)=-9.8t^2-10t+310 where t is in seconds and height is in meters. After how many seonds will the stone hit the ground? Round to the

asked by Anonymous* on August 4, 2012

A stone is dropped from rest from a bridge that is 45 m above a river. A second stone is thrown down 1.o s after the first stone is dropped. The two stones strike the water simultaneously. What was the initial velocity of the second stone?

asked by Cass on September 29, 2016
27. ## Question ! :)

Why is it important to use caution before putting any personal information on a computer? (example(s) required) I think everyone knows the general idea to the answer to this question but this is my final exam question...so it has to be thorough. Any

asked by Kate on May 19, 2009
28. ## Computer

Why is it important to use caution before putting any personal information on a computer? (example(s) required) I think everyone knows the general idea to the answer to this question but this is my final exam question...so it has to be thorough. Any

asked by Helen on May 19, 2009
29. ## physics

a very strong young child tosses a stone into the air. his father times the stone's travel and finds that it takes the stone 2.8 seconds to return to the child's hand. how high did the stone rise?

asked by Anonymous on December 20, 2010
30. ## Finance

You wish to deposit an amount now that will accumulate to \$100,000 in 10 years. How much less would you have to deposit if the rate of interest was 8% compounded monthly versus annually? So ive tried doing this question but I cant seem to get the final

asked by Sarah on February 22, 2019
31. ## Physics

A 8.1 kg stone is at rest on a spring. The spring is compressed 12 cm by the stone. The stone is then pushed down an additional 27 cm and released. To what maximum height (in cm) does the stone rise from that position?

asked by Liz on August 19, 2010
32. ## Calculus

A stone is dropped from the upper observation deck of a tower, 200 m above the ground. (Assume g = 9.8 m/s^2.) a)Find the distance (in meters) of the stone above ground level at time t. b)With what velocity does it strike the ground? (Round your answer to

asked by John on November 13, 2011
33. ## Physics

While standing on a bridge 45.0 m above ground, you drop a stone from rest. When the stone has fallen 3.90 m, you throw a second stone straight down. What initial velocity must you give the second stone if they are both to reach the ground at the same

asked by Marie on September 6, 2012
34. ## Physics

While standing on a bridge 45.0 m above ground, you drop a stone from rest. When the stone has fallen 3.90 m, you throw a second stone straight down. What initial velocity must you give the second stone if they are both to reach the ground at the same

asked by Marie on September 6, 2012
35. ## physics

While standing on a bridge 45.0 m above ground, you drop a stone from rest. When the stone has fallen 3.80 m, you throw a second stone straight down. What initial velocity must you give the second stone if they are both to reach the ground at the same

asked by lennox on September 6, 2012
36. ## Physics

While standing at the edge of the roof of a building, you throw a stone upward with an initial speed of 6.05 m/s. The stone subsequently falls to the ground, which is 12.7 m below the point where the stone leaves your hand. At what speed does the stone

asked by Kaylee on September 27, 2016
37. ## Physics

While standing at the edge of the roof of a building, you throw a stone upward with an initial speed of 6.11 m/s. The stone subsequently falls to the ground, which is 12.7 m below the point where the stone leaves your hand. At what speed does the stone

asked by Morgan on September 26, 2016
38. ## Physics

While standing at the edge of the roof of a building, you throw a stone upward with an initial speed of 7.65 m/s. The stone subsequently falls to the ground, which is 12.7 m below the point where the stone leaves your hand. At what speed does the stone

asked by Breauna on February 2, 2015
39. ## Physics

A slingshot with k = 400. N/m is pulled back 0.0500 m to shoot a 0.100-kg stone. If the slingshot projects the stone straight up in the air, (a) what is the speed when the stone is first released, and (b) what is the maximum height to which the stone will

asked by Francis on December 27, 2012
40. ## Physics

A slingshot with k = 400. N/m is pulled back 0.0500 m to shoot a 0.100-kg stone. If the slingshot projects the stone straight up in the air, (a) what is the speed when the stone is first released, and (b) what is the maximum height to which the stone will

asked by Francis on December 27, 2012
41. ## physics

a stone is thrown vertically upward with an intial velovity of 12m/s, after some time it returns to the same position a)what is the displacement of the stone b)the highest point it reached if it took 2 seconds for the stone to reach this point c)the

asked by chibwe on May 7, 2017
42. ## PHYYYYYSICS

A catapult launches a stone at an angle of 20° above the horizontal at a speed of 26.8 m/s. Assuming the stone begins its trajectory at the origin, determine the distance in meters from the origin that the stone achieves after 1.05 s. Note: The stone will

asked by Carissa on September 18, 2014
43. ## Physics HELP!

A mountaineer estimates the depth of a crevasse by dropping a stone and listening for sound when the stone hits the bottom. The speed of sound in air is 340m/s. If the sound is heard 10s after the stone is dropped, what is the depth of the crevasse? Do you

asked by Ella on October 2, 2008
44. ## physics

A rock climber stands on top of a 56m -high cliff overhanging a pool of water. He throws two stones vertically downward 1.0s apart and observes that they cause a single splash. The initial speed of the first stone was 2.5(m/s) How long after the release of

asked by Nicole on October 2, 2012
45. ## Physics

A constant net force of 406 N, up, is applied to a stone that weighs 33 N. The upward force is applied through a distance of 2.4 m, and the stone is then released. To what height, from the point of release, will the stone rise? I was given this reply: The

asked by Einstein on December 15, 2007
46. ## Physics

A ball acquires a horizontal speed of 12m/sec when a force is applied for a distance of .50m. If the ball has a mass of 1.0kg what is the force applied? ANSWER: 144N....I'm not sure what formulas I'd apply. It takes a force of 109N to life a stone straight

47. ## Math

I posted these 2 questions a couple of days ago and although the help I received would have been more appreciated if it didn't come with an underhanded comment, I did see where I made my mistake with the first question, however I would like to know with

asked by Dania on November 20, 2010
48. ## Dynamics

A stone is thrown vertically upward from the top of a 30m high building with a velocity of 15m/s. Taking the acceleration of stone as 9.81 m/s2. And taking that as constant, determine a) the velocity v and elevations sy of stone above the ground at any

asked by Rajan on July 30, 2012
49. ## Dynamics

A stone is thrown vertically upward from the top of a 30m high building with a velocity of 15m/s. Taking the acceleration of stone as 9.81 m/s2. And taking that as constant, determine a) the velocity v and elevations sy of stone above the ground at any

asked by Rajan on August 2, 2012
50. ## Physics

A stone is dropped from rest from the roof of a 100-m high building; 2.00 s after that, a second stone is thrown straight down with initial speed v0, and the second stone passes the first stone 21.6 m above ground. (a) When are the stones at the same

asked by Help Me on January 23, 2013
51. ## physics

a stone tied to the end of string 80 cm long whirled in a horizontal circle with a constant speed the stone makes 14 revolutions in 25 sec a)what is the total angle in radian described by the stone in 25 sec b)find the angular speed of the stone? c)find

asked by girl on September 23, 2018
52. ## Math

A stone is thrown vertically upwards from a platform 60meters above the ground. The initial velocity of the stone is 20m/s.The height of the stone above the ground at t seconds is given by: H(t)=20t-5t^2+60m.How long does it take for the stone to hit the

asked by Lusi. on December 20, 2011
53. ## Physics

1) A car traveling at 22m/s decelerates at a constant 1.5m/s^2. Calculate the time it takes to stop. I first calculated the distance which is 160 m. Then I used the formula d=vit+1/2at^2. I got a quadratic -0.75t^2+22t-160. I got 13 or 16 as my time, but

asked by Alex on February 12, 2008
54. ## Physics

A stationary curling stone is struck in a glancing collision by a second curling stone of equal mass. If the first stone moves away at a velocity of 0.92 m/s [N71¡ã W] and the second stone moves away at a velocity of 1.25 m/s [N44¡ã E], what was the

asked by tom on March 30, 2016
55. ## Physics

I have already solved 2 out of 3 questions: Your spaceship lands on an unknown planet. To determine the local value of g, you ask a steel-toed crew member to kick a stone, and you find that if she kicks it at 16.0 m/s at various angles, the maximum range

asked by . on September 17, 2010
56. ## intermediate algebra

if a stone is tossed from the top of a 310 meter building, the height of the stone as a function of time is given by h(t)=-9.8t^2-10t+310. where t is in seconds, and height is in meters. After how many seconds will the stone hit the ground? Round to the

asked by ROCKY on July 28, 2011
57. ## Math

If a stone is tossed from the top of a 330 meter building, the height of the stone as a function of time is given by h(t)=-9.8t^2-10t+330, where t is in seconds, and height is in meters.After how many seconds will the stone hit the ground? round to the

asked by Mike on February 16, 2011
58. ## physics

Jack drops a stone from rest off of the top of a bridge that is 24.4 m above the ground. After the stone falls 6.6 m, Jill throws a second stone straight down. Both rocks hit the water at the exact same time. What was the initial velocity of Jill's rock?

asked by Tracy on August 30, 2014

If a stone is tossed from the top of a 250 meter building, the height of the stone as a function of time is given by h(t) = -9.8t2 – 10t + 250, where t is in seconds, and height is in meters. After how many seconds will the stone hit the ground? Round to

asked by max on December 20, 2010
60. ## math

If a stone is tossed from the top of a 250 meter building, the height of the stone as a function of time is given by h(t) = -9.8t2 – 10t + 250, where t is in seconds, and height is in meters. After how many seconds will the stone hit the ground? Round to

asked by carol on May 3, 2011
61. ## algebra

If a stone is tossed from the top of a 230 meter building, the height of the stone as a function of time is given by h(t) = -9.8t2 – 10t + 230, where t is in seconds, and height is in meters. After how many seconds will the stone hit the ground? Round to

asked by alysia on August 25, 2011
62. ## Algebra

If a stone is tossed from the top of a 290 meter building, the height of the stone as a function of time is given by h(t) = -9.8t2 – 10t + 290, where t is in seconds, and height is in meters. After how many seconds will the stone hit the ground? Round to

asked by Tammy on July 1, 2011
63. ## math

If a stone is tossed from the top of a 210 meter building, the height of the stone as a function of time is given by h(t) = -9.8t2 – 10t + 210, where t is in seconds, and height is in meters. After how many seconds will the stone hit the ground? Round to

asked by Taina on June 20, 2011
64. ## math

If a stone is tossed from the top of a 250 meter building, the height of the stone as a function of time is given by h(t) = -9.8t2 – 10t + 250, where t is in seconds, and height is in meters. After how many seconds will the stone hit the ground? Round to

asked by carol on May 2, 2011
65. ## math

f a stone is tossed from the top of a 330 meter building, the height of the stone as a function of time is given by h(t) = -9.8t2 – 10t + 330, where t is in seconds, and height is in meters. After how many seconds will the stone hit the ground? Round to

asked by tina on November 9, 2011
66. ## Math

If a stone is tossed from the top of a 230 meter building, the height of the stone as a function of time is given by h(t) = -9.8t2 – 10t + 230, where t is in seconds, and height is in meters. After how many seconds will the stone hit the ground? Round to

asked by Jacque on November 10, 2010
67. ## Physics

Help imediately please very urgent! A stone is dropped from a cliff 200m high,if a second stone is thrown vertically upwards 1.50sec after the first was released,strike the base of the cliff at the same in stant as the first stone,with what velocity was

asked by Precious on January 4, 2013
68. ## physics

While standing on a bridge 30.0 m above the ground, you drop a stone from rest. When the stone has fallen 3.20 m, you throw a second stone straight down. What initial velocity must you give the second stone if they are both to reach the ground at the same

asked by brizett on January 26, 2013
69. ## college physics

While standing on a bridge 15.0 m above the ground, you drop a stone from rest. When the stone has fallen 3.10 m, you throw a second stone straight down. What initial velocity must you give the second stone if they are both to reach the ground at the same

asked by tina on January 31, 2010
70. ## physics

While standing on a bridge 15.0 m above the ground, you drop a stone from rest. When the stone has fallen 3.10 m, you throw a second stone straight down. What initial velocity must you give the second stone if they are both to reach the ground at the same

asked by brittany on January 31, 2010
71. ## college physics

While standing on a bridge 15.0 m above the ground, you drop a stone from rest. When the stone has fallen 3.10 m, you throw a second stone straight down. What initial velocity must you give the second stone if they are both to reach the ground at the same

asked by tina on January 31, 2010
72. ## physics

While standing on a bridge 15.0 m above the ground, you drop a stone from rest. When the stone has fallen 5.00 m, you throw a second stone straight down. What initial velocity must you give the second stone if they are both to reach the ground at the same

asked by bethany on September 9, 2010
73. ## physics

While standing on a bridge 15.0 m above the ground, you drop a stone from rest. When the stone has fallen 3.10 m, you throw a second stone straight down. What initial velocity must you give the second stone if they are both to reach the ground at the same

asked by Anonymous on January 31, 2010
74. ## mechanics

a stone is dropped from a cliff 200m high.if a second stone is thrown verticall upwards 1.50seconds after the first was released.strike the cliff base at the same instant as the first stone.with what velocity was the second stone thrown

asked by chibuzor on January 30, 2013
75. ## physics

While standing on a bridge 18.5 m above the ground, you drop a stone from rest. When the stone has fallen 2.80 m, you throw a second stone straight down. What minimal initial velocity must you give the second stone if they are both to reach the ground at

asked by shaknocka on February 7, 2011
76. ## Physics

While standing on a bridge 18.3 m above the ground, you drop a stone from rest. When the stone has fallen 2.60 m, you throw a second stone straight down. What minimal initial velocity must you give the second stone if they are both to reach the ground at

asked by jhockens on September 9, 2012
77. ## Physics

While standing on a bridge 19.1 m above the ground, you drop a stone from rest. When the stone has fallen 3.40 m, you throw a second stone straight down. What minimal initial velocity must you give the second stone if they are both to reach the ground at

asked by jhockens on September 9, 2012
78. ## physics

A stone is dropped off the science building and accelerates, from rest, toward the ground at 9.8 m/s/s. A curious physics student looks out the third floor window as the stone falls past. She happens to have a stopwatch and she finds that it takes 0.30 sec

asked by joyce on September 23, 2010
79. ## Physics

A stone is dropped off the science building and accelerates, from rest, toward the ground at 9.8 m/s/s. A curious physics student looks out the third floor window as the stone falls past. She happens to have a stopwatch and she finds that it takes 0.30 sec

asked by karla on September 23, 2010
80. ## Physics

From the edge of the rooftop of a building, a boy throws a stone at an angle 24.0° above the horizontal. The stone hits the ground 4.40 s later, 104 m away from the base of the building. (Ignore air resistance.) Find the initial velocity of the stone.

asked by Max on February 8, 2010
81. ## Physics

A constant net force of 406 N, up, is applied to a stone that weighs 33 N. The upward force is applied through a distance of 2.4 m, and the stone is then released. To what height, from the point of release, will the stone rise? Thoughts: F = ma. Would the

asked by Einstein on December 14, 2007
82. ## Statistics

On a very short quiz, there is one multiple choice question with 5 possible choices (a, b, c, d, e) and one true or false question. Assume you are taking the quiz but do not have any idea what the correct answer is to either question. You mark an answer to

asked by Cassie on July 8, 2011
83. ## physics

From the edge of the rooftop of a building, a boy throws a stone at an angle 30.0° above the horizontal. The stone hits the ground 4.10 s later, 112 m away from the base of the building. (Ignore air resistance.) (a) Find the initial velocity of the stone.

asked by jenn on February 14, 2010
84. ## science

A stone is dropped into a river from a bridge 43.9 m above the water. Another stone is dropped vertically down 1s after the first is dropped. Both stones strike the water at the same time. a) What is the initial speed of the second stone? Write an equation

asked by sara on September 17, 2006
85. ## SCIENCE

A stone thrown from the top of a building is given an initial velocity of 40.0 m/s straight upward. The building is 70.0m high, and the stone just misses the edge of the roof on its way down, determine (A) The time at which the stone reaches its maximum

asked by BENSON on April 12, 2017
86. ## PHYSICS

A stone thrown from the top of a building is given an initial velocity of 40.0 m/s straight upward. The building is 70.0m high, and the stone just misses the edge of the roof on its way down, determine (A) The time at which the stone reaches its maximum

asked by BENSON on April 12, 2017
87. ## English Language Arts

I have 2 questions about gerunds. The first question I'm pretty sure I know the answer but I need the most help with the second: 1.Which word or words from the following sentence is used as a gerund: "By stealing a summerstick, Gluskabe was able to defeat

asked by Anonymous on April 26, 2018
88. ## Velocity and Displacement

A stone falls freely from rest for 8.0s. A. Calculate the stone's velocity after 8.0s. V2-V1+at V2 = (0) = 9.8(8.0) V2 = 78.4m/s B. What is the stone's displacement during this time? d = (v2 + v1)t/2 d = (78.4 + 0)/2(8.0) d = 313.6m

asked by -Untamed- on October 9, 2011
89. ## physics

A 160g stone, tied to a thread, swings in a horizontal circle with a 100 cm diameter. If the maximum tension the thread can withstand before snapping is 28n, find the A) Maximum speed of the stone. B) Acceleration of the stone at this speed. For A I used

asked by mack on November 22, 2011
90. ## Physics

A stone is dropped from a high altitude and 3 s later another stone is projected downward with a speed of 150 ft/s. When and where will the second stone overtake the first? Ans. (a) 5.70 s (b) 520 ft

asked by Bill on September 24, 2011
91. ## Physics

A stone is dropped from an airplane at a height of 490 m. The stone required 10 s to reach the ground at what rate does gravity accelerate the stone?

asked by Neenee on September 17, 2013
92. ## Physics

A curling stone with a mass of 18 kg slides 38m across a sheet of ice in 8.0 s before it stops because of friction. What is the co¨efficient of kinetic friction between the ice and the stone? (Note: you will need to calculate the acceleration of the stone

asked by Sarah on October 29, 2015
93. ## Physics 20

dynamics A curling stone has a mass of 20kg. a curler pushed the stone across the ice to launch it down the rink. a)if the curler starts to move the stone by pushing it with 15N, what is the stones initial acceleration? b)once moving, how much force is

asked by peter on April 6, 2011
94. ## Physics 20

dynamics A curling stone has a mass of 20kg. a curler pushed the stone across the ice to launch it down the rink. a)if the curler starts to move the stone by pushing it with 15N, what is the stones initial acceleration? b)once moving, how much force is

asked by bob on April 6, 2011
95. ## Calculus

this homework is due in one hour and i have no idea how to answer these questions. 1. A car is traveling at 50 mi/h when the brakes are fully applied, producing a constant deceleration of 20 ft/s^2. What is the distance covered before the car comes to a

asked by Sam on November 16, 2011
96. ## physics

A stone is dropped from a 75 m high building. when this stone has dropped 15m, a second stone is thrown downward with an initial velocity such that two stones hit the ground at the same time. find a. time taken for the first stone to fall 75m. (b) the time

asked by elaine on October 19, 2010
97. ## physics

A stone is dropped from a 75 m high building. when this stone has dropped 15m, a second stone is thrown downward with an initial velocity such that two stones hit the ground at the same time. find a. time taken for the first stone to fall 75m. (b) the time

asked by elaine on October 19, 2010
98. ## physics

Madhuri throws a stone the stone is thrown horizontally at 33.9 m/s from the top of a 297.9m cliff. 1.How high is the stone after 3.35 sec? 2.What is the range? equations to find please.

asked by Bansnoob on October 5, 2010
99. ## physics

from a cliff of 49m high ,a man drops a stone 1s later he throes second stone . they both hit the ground at the same time . find out the speed with which he throws the second stone.

asked by divya on September 10, 2014
100. ## Physics

In the winter sport of curling, players give a 20 kg stone a push across a sheet of ice. A curler accelerates a stone to a speed of 3.0 m/s over a time of 2 s. a)How much force does the curler exert on the stone? b)What average power does the curler use to

asked by Lindsey on November 22, 2011