Two students are on a balcony 20.5 m above the street. One student throws a ball (ball 1) vertically downward at 11.1 m/s; at the same instant, the other student throws a ball (ball 2) vertically upward at the same

24,246 questions
1. Physics

Two students are on a balcony 19.6 m above the street. One student throws a ball (ball 1) vertically downward at 15.8 m/s; at the same instant, the other student throws a ball (ball 2) vertically upward at the same speed. The second ball just misses the

asked by Kelly on May 13, 2011
2. Physics

Two students are on a balcony 22 m above the street. One student throws a ball vertically downward at 15.5 m/s; at the same instant, the other student throws a ball vertically up- ward at the same speed. The second ball just misses the balcony on the way

asked by Mariana on February 8, 2016
3. physics

Two students are on a balcony 18.3 m above the street. One student throws a ball (ball 1) vertically downward at 12.2 m/s; at the same instant, the other student throws a ball (ball 2) vertically upward at the same speed. The second ball just misses the

asked by B on August 29, 2011
4. physics

Two students are on a balcony 18.3 m above the street. One student throws a ball (ball 1) vertically downward at 12.2 m/s; at the same instant, the other student throws a ball (ball 2) vertically upward at the same speed. The second ball just misses the

asked by B on August 29, 2011
5. Physics

Two students are on a balcony 24.3m above the street. One student throws a ball, B1, vertically downward at 12.5 m/s. At the same instant, the other student throws a ball, B2, vertically upward at the same speed. The second ball just misses the balcony on

asked by Aidan on February 14, 2011
6. Physics

Two students are on a balcony 19.6 m above the street. One student throws a ball vertically downward at 14.7 m/s. Att the same instant, the other student throws a ball vertically upward at the same speed. The second ball just misses the balcony on the way

asked by Becca (question four of four!) on September 24, 2006
7. Physics

Two students are on a balcony 24.3 m above the street. One student throws a ball, b1, vertically downward at 15.8 m/s. At the same instant, the other student throws a ball, b2, vertically upward at the same speed. The second ball just misses the balcony on

asked by Mel on October 9, 2012
8. physics

Two students are on a balcony 24.4 m above the street. One student throws a ball, b1, vertically downward at 20.3 m/s. At the same instant, the other student throws a ball, b2, vertically upward at the same speed. The second ball just misses the balcony on

asked by morgan on September 11, 2012
9. Physics

Two students are on a balcony 22.3 m above the street. One student throws a ball, b1, vertically downward at 19.2 m/s. At the same instant, the other student throws a ball, b2, vertically upward at the same speed. The second ball just misses the balcony on

asked by . on October 10, 2012
10. Physics

Two students are on a balcony 24.9 m above the street. One student throws a ball, b1, vertically downward at 19.6 m/s. At the same instant, the other student throws a ball, b2, vertically upward at the same speed. The second ball just misses the balcony on

asked by Chris on September 29, 2011
11. physics

Two students are on a balcony 24.4 m above the street. One student throws a ball, b1, vertically downward at 20.3 m/s. At the same instant, the other student throws a ball, b2, vertically upward at the same speed. The second ball just misses the balcony on

asked by morgan on September 11, 2012
12. physics

Two students are on a balcony 21.4 m above the street. One student throws a ball, b1, vertically downward at 13.2 m/s. At the same instant, the other student throws a ball, b2, vertically upward at the same speed. The second ball just misses the balcony on

asked by Shaina on September 4, 2012
13. physics

Two students are on a balcony 21.4 m above the street. One student throws a ball ver- tically downward at 15.6 m/s. At the same instant, the other student throws a ball verti- cally upward at the same speed. The second ball just misses the balcony on the

asked by Heather on September 9, 2015
14. physics

two students are on a balcony 20.6 m above the street. One student throws a ball vertically downward at 14.7 m/s. At the same instant, the other student throws a ball vertically upward at the same speed. The second ball just misses the balcony on the way

asked by fsfsf on March 2, 2011
15. physics

two students are on a balcony 20.6 m above the street. One student throws a ball vertically downward at 14.7 m/s. At the same instant, the other student throws a ball vertically upward at the same speed. The second ball just misses the balcony on the way

asked by fsfsf on March 2, 2011
16. Physics

Two students are on a balcony 29.4 m above the street. One student throws a ball vertically downward at 14.7 m/s. At the same instant, the other student throws a ball vertically upward at 29.4 m/s . The second ball just misses the balcony on the way down.

asked by grace on October 23, 2010
17. Physics

Two students are on a balcony 20.5 m above the street. One student throws a ball (ball 1) vertically downward at 11.1 m/s; at the same instant, the other student throws a ball (ball 2) vertically upward at the same speed. The second ball just misses the

asked by Rachel on May 12, 2011
18. Physics

Two students are on a balcony 19.6 m above the street. One student throws a ball vertically downward at 14.7 m/s. At the same instant, the other student throws a ball vertically upward at the same speed. The second ball just misses the balcony on the way

asked by Becca on September 25, 2006
19. Physics

Two students are on a balcony a distance h above the S street. One student throws a ball vertically downward at a speed vi ; at the same time, the other student throws a ball vertically upward at the same speed. Answer the following symbolically in terms

asked by Anonymous on March 31, 2016
20. physics

Two students are on a balcony that is 15 m above the ground. One student throws a ball vertically downward with an initial velocity of 12 m/s. Another student throws a ball upward at the same time with exactly the same speed. Both Balls eventually hit the

asked by Kiki on October 22, 2015
21. Physics

A ball is thrown downward from a balcony that is 19.6m above the ground one kid throws downward at 14.7m/s, at the same time another student throws a ball upward from the balcony at the same speed. what is the difference of the time the balls are in the

asked by Bear on October 1, 2012
22. physic

Somehow two students managed to open two windows at the library. Student A is 17 m above the ground and Student B is 23.5 m above the ground. At the same time that Student A drops a ball, Student B throws a ball straight down at an initial speed of 7.36

asked by Angel on September 8, 2016
23. PHYSICS

A person on an apartment balcony holds a ball over the balcony and throws it directly upwards with an initial velocity of 30 m/s [up]. The ball was thrown from 15 m above the ground. How long will it take for the ball to hit the ground?

asked by Tasha on February 19, 2013
24. physic

Somehow two students managed to open two windows at the library. Student A is 17 m above the ground and Student B is 23.5 m above the ground. At the same time that Student A drops a ball, Student B throws a ball straight down at an initial speed of 7.36

asked by Angel on September 11, 2016
25. Physics

Mary throws a ball from her balcony downwards as it is shown in the figure. How long does it take to reach the ground? What is the balcony height?

asked by Anonymous on October 22, 2015
26. Math 10

Myrtle throws a ball upward from a second-floor balcony, 6 m above the ground with an initial velocity of 2 m/s. In this situation, u = 2 and ho = 6, so the relation that models the height of the ball is h = -5t2 + 2t + 6. Myrtle knows that changing the

asked by Kitty on May 8, 2014
27. physics

three more questions: 1) A 1.50kg projectile is launched at 18.0m/s from level ground. The launch angle is 26 degrees above the horizontal. (Assume negligible friction) a) What is the maximum height reached by this projectile? b) How was will the

asked by stacy on February 17, 2011
28. Physical science

A ball is thrown up at 8m.s from the roof which is 60m high.it strikes the balcony below after 4s.the ball then bounces off the balcony and strikes the ground.ignore the effects of friction.calculate magnitude of the velocity at which the ball strike the

asked by lebogang on April 24, 2013
29. Physics

A student throws a baseball vertically upward, and 2.8s later catches it at the same level. Neglecting air resistance , calculate the following (a) the velocity at which the ball left the students hand (b) the height to which the ball climbed above the

asked by Melissa on March 12, 2012
30. Physics

A ball thrown by a boy in the street is caught 5 s later by another boy on the balcony of the house 10 m away and 3 m above the street level. What is the initial speed of the ball? What is the angle above the horizontal at which it was thrown?

31. Physics

A child stands on a balcony directly above a friend 5.00 m below. Each throws a ball toward the other with the same initial speed of 10.0 m/s. If each catches a ball at the same instant, which child threw a ball first? How much later was the second ball

asked by Bob on October 19, 2015
32. physics

a 65kg student holding a 5 kg ball is at rest on ice. if the student throws the ball at 3m/s to the left, what is her velocity after throwing the ball

asked by bebe on January 13, 2011
33. physics

a 65kg student holding a 5 kg ball is at rest on ice. if the student throws the ball at 3m/s to the left, what is her velocity after throwing the ball

asked by bebe on January 13, 2011
34. algebra

A student threw a ball directly upward from the balcony of a building. The height of the ball as measured from the ground "t" seconds after it was thrown, is given by the expression h= -16t(2nd power) + 64t + 768 When does the ball reach the ground?

asked by Pat on September 14, 2009
35. Physics

A science student is riding on a flatcar of a train along a strait, horizontal track at a constant speed of 12.0 m/s. The student throws a ball into the air along a path he judges to make an initial angle 65. deg with the horizontal and to be in line with

asked by Mary on September 25, 2016
36. physics

A science student is riding on a flatcar of a train traveling along a straight, horizontal track at a constant speed of 12.8 m/s. The student throws a ball into the air along a path that he judges to make an initial angle of 67.0° with the horizontal and

asked by sedef on October 11, 2012
37. physics

A science student is riding on a flatcar of a train traveling along a straight horizontal track at a constant speed of 12.0 m/s. The student throws a ball into the air along a path that he judges to make an initial angle of 60.0° with the horizontal and

asked by kia on February 17, 2011
38. physics

A science student is riding on a flatcar of a train traveling along a straight horizontal track at a constant speed of 12.0 m/s. The student throws a ball into the air along a path that he judges to make an initial angle of 60.0° with the horizontal and

asked by Anonymous on February 18, 2011
39. physics

A student standing on the ground throws a ball straight up. The ball leaves the student's hand with a speed of 19.0m/s when the hand is 1.50m above the ground. How long is the ball in the air before it hits the ground? (The student moves her hand out of

asked by Jack on September 26, 2014
40. physics

A student standing on the ground throws a ball straight up. The ball leaves the student's hand with a speed of 15m/s{\rm m}/{\rm s} when the hand is 2.0m{\rm m} above the ground.How long is the ball in the air before it hits the ground? (The student moves

asked by Av on September 16, 2014
41. Physics

A science student is riding on a flatcar of a train travelling along a straight horizontal track at a constant speed of 10.0 m/s.The student throws a ball into the air along a path that he judges to make an initial angle of 60.0 degrees with the horizontal

asked by Sammie on February 17, 2013
42. physics

A science student is riding on a flatcar of a train traveling along a strait, horizontal track at a consistent speed of 12 m/s. The student throws a ball into the air along a path he judges to make an initial angle of 65 degrees with the horizontal and to

asked by Cali on June 1, 2018
43. Physics

A student standing on the ground throws a ball straight up. The ball leaves the student's hand with a speed of 11 m/s when the hand is 1.8 m above the ground. How long is the ball in the air before it hits the ground? (The student moves her hand out of the

asked by Sarah on January 18, 2012
44. Physics

A student standing on the ground throws a ball straight up. The ball leaves the student's hand with a speed of 17.0 m/s when the hand is 1.50 m above the ground. How long is the ball in the air before it hits the ground? (The student moves her hand out of

asked by Erika on September 17, 2015
45. physics

A student standing on the ground throws a ball straight up. The ball leaves the student's hand with a speed of 14.0 when the hand is 2.30 above the ground.How long is the ball in the air before it hits the ground? (The student moves her hand out of the

asked by sam on January 25, 2011
46. Trigonometry

Two students are passing a ball back and forth, allowing it to bounce once between them. If one students bounce passes the ball from a height of 1.4 m and it bounces 3 m away from the students, where should the second student stand to catch the ball at a

asked by Bob on September 25, 2017
47. Physics

A science student riding on a ﬂatcar of a train moving at a constant speed of a 9.70 m/s throws a ball toward the caboose along a path that the student judges as making an initial angle of 45.0◦ with the horizontal. The teacher, who is standing on the

asked by Big Poppa Smurf on November 29, 2012
48. Physics

You throw a ball straight down from an apartment balcony to the ground below. The ball has an initial velocity of 5.20 m/s, directed downward, and it hits the ground 2.10 s after it is released. Find the height of the balcony.

asked by Haze on January 31, 2012
49. Physics

You throw a ball straight down from an apartment balcony to the ground below. The ball has an initial velocity of 4.50 m/s, directed downward, and it hits the ground 2.04 s after it is released. Find the height of the balcony.

asked by Delilah on February 24, 2010
50. physics

You throw a ball straight down from an apartment balcony to the ground below. The ball has an initial velocity of 5.25 m/s, directed downward, and it hits the ground 1.94 s after it is released. Find the height of the balcony.

asked by Nour on September 13, 2011
51. physics

A science student is riding on a flatcar of a train traveling along a straight horizontal track at a constant speed of 18.0 m/s. The student throws a ball along a path that she judges to make an initial angle of 68.0° with the horizontal and to be in line

asked by amy on September 18, 2012
52. math

1) John usually gets to work by driving 29 miles down Greenwich Street, which goes from his house to his office in a straight line. One week, Greenwich Street is closed due to construction, so John gets to work by driving 13 miles wests on 57th street, and

asked by aline on February 16, 2018
53. physics

A students on a balcony uses a slingshot to shoots rock straight up at 29.4 m/s. If the rock takes 8.0 s seconds to hit the ground below the balcony, how high is the balcony above the ground?

asked by Anonymous on January 20, 2011
54. science

girl throws the ball with a certain angle. It covers maximum horizontal distance R. How much height ball reaches if she throws the same ball vertically upward? Assume her muscles give the ball same speed in each case.

asked by amol on August 14, 2012

A student standing on the ground throws a ball straight up. The ball leaves the student's hand with a speed of 11.0 m/s when the hand is 1.50 m above the ground. How long is the ball in the air before it hits the ground? (The student moves her hand out of

asked by Anonymous on October 10, 2007
56. Physics

A student standing on the ground throws a ball straight up. The ball leaves the student's hand with a speed of 13m/s when the hand is 2.3m above the ground, how long does it stay in the air?

asked by Mike on April 26, 2011
57. physics

A student throws a ball vertically upward such that it travels 7.5 to its maximum height.If the ball is caught at the initial height 2.3 after being thrown, what is the ball’s average speed? What is the ball’s average velocity?

asked by Anonymous on February 17, 2011
58. physics

A student standing on the ground throws a ball straight up. The ball leaves the student's hand with a speed of 12.0 m/s when the hand is 2.40 m above the ground.

asked by jesse on October 13, 2010
59. physics

A student throws a ball vertically upward such that it travels 7.4m to its maximum height. Part A If the ball is caught at the initial height 2.7s after being thrown, what is the ball’s average speed? Part B What is the ball’s average velocity?

asked by Anonymous on September 5, 2013
60. Physics

Two students each hit a golf ball at the same speed, but the first student hits his ball at an angle of 60.34o with the horizontal, and the second student hits his at (30-0.34)o with the horizontal. Which ball goes further? Which one hits the ground first?

asked by Supansa on February 20, 2016
61. urgent physics..

Adventurous Mary tries a new game: she puts on her rollerblades and throws the ball towards the wall, lets it bounce off, catches it again, throws it right back, and so on. She notices a strange thing: after the second throw, she is unable to catch the

asked by jack on June 18, 2013
62. child developement

A child throws a ball with speed and accuracy when he throws a ball to his teacher but his throws are slower and less accurate when plays with a group of friends. This difference is explained by A. classical stage theory B. probility theory C. locomotion-x

asked by jane on April 28, 2012
63. childcare

A child throws a ball with speed and accuracy when he throws a ball to his teacher but his throws are slower and less accurate when plays with a group of friends. This difference is explained by A. classical stage theory B. probility theory C. locomotion-x

asked by mary on September 8, 2012
64. From Theory to practice

A child throws a ball with speed and accuracy when he throws a ball to his teacher but his throws are slower and less accurate when plays with a group of friends. This difference is explained by  A. classical stage theory B. probility theory C.

asked by Amanda on July 1, 2015
65. From theory and practice

A child throws a ball with speed and accuracy when he throws a ball to his teacher but his throws are slower and less accurate when plays with a group of friends. This difference is explained by A. classical stage theory B. probility theory C.

asked by Amanda on July 16, 2015
66. physics

a student throws a ball straight upwards to a height to height of 7.50m How much work did did the student do?

asked by tony on September 19, 2010
67. calculus

A student throws a ball upward from a height of 48ft, initially at 32ft per second. What is the maximum height of the ball?

asked by Haze on February 2, 2017
68. calculus

A student throws a rubber ball upward from a height of 12 feet,initially at 8 feet per second. a.Write the position function that models the height of the ball t seconds after it was thrown. b.What is the maximum height of the ball?

asked by me on March 2, 2019
69. Physics

Juliet sits on her balcony while Romeo serenades her from the ground, 7.00m below. To win Juliet’s affection, Romeo throws Juliet a bouquet of roses. At what velocity must the roses be thrown if they are to reach Juliet on the balcony?.

asked by Tom on March 10, 2016
70. physics

Adventurous Mary tries a new game: she puts on her rollerblades and throws the ball towards the wall, lets it bounce off, catches it again, throws it right back, and so on. She notices a strange thing: after the second throw, she is unable to catch the

asked by Anonymous on June 17, 2013
71. physics

Adventurous Mary tries a new game: she puts on her rollerblades and throws the ball towards the wall, lets it bounce off, catches it again, throws it right back, and so on. She notices a strange thing: after the second throw, she is unable to catch the

asked by jack on June 18, 2013
72. Physics

Adventurous Mary tries a new game: she puts on her rollerblades and throws the ball towards the wall, lets it bounce off, catches it again, throws it right back, and so on. She notices a strange thing: after the second throw, she is unable to catch the

asked by Abhishek Ranjan on June 17, 2013
73. physics

A physics student throws a softball straight up into the air. The ball was in the air for a total of 6.16 s before it was caught at its original position. (a) What was the initial velocity of the ball? (b) How high did it rise?

asked by Anonymous on January 16, 2012
74. physics

A physics student throws a softball straight up into the air. The ball was in the air for a total of 6.16 s before it was caught at its original position. (a) What was the initial velocity of the ball? (b) How high did it rise?

asked by Anonymous on January 16, 2012
75. Foundation of a Healthy Lifestyle

When a child not only throws a ball farther than she had previously, but also changes the way the throws the ball, the change is called  A. qualitative.  B. cumulative.  C. multifactoral.  D. quantitative.  D.

asked by Amanda on November 20, 2014
76. Foundation of a Healthy Lifestyle

When a child not only throws a ball farther than she had previously, but also changes the way the throws the ball, the change is called A. qualitative. B. cumulative. C. multifactoral. D. quantitative. D.

asked by Amanda on November 20, 2014
77. The Young Child and the Environment

When a child not only throws a ball farther than she had previously, but also changes the way the throws the ball, the change is called A. Cumulative B. Multifactoral C. Quantitative D. Qualitative

asked by Lisa on September 23, 2010
78. physics

How much work does a student do if he throws a 0.750 kg ball with force of 45.0 N through a distance of 1.50 m?

asked by naya on November 6, 2013
79. physics

A baseball is seen to pass upward by a window 29 m above the street with a vertical speed of 15 m/s. The ball was thrown from the street.After how many more seconds does it reach the street again?

asked by Anonymous on September 13, 2009
80. Physics

The fastest major league pitcher throws a ball at 41.0 m/s . If he throws the ball horizontally, how far does it drop vertically on the 19.7 m trip to home plate?

asked by Anonymous on January 26, 2017
81. physics

The fastest major league pitcher throws a ball at 40.0. If he throws the ball horizontally, how far does it drop vertically on the 17.7 trip to home plate?

asked by kt on September 20, 2010
82. Physics

The fastest major league pitcher throws a ball at 45m/s. If he throws the ball horizontally, how far does it drops vertically on the 18.4m trip to the home plate?

asked by Mily on September 25, 2011
83. chilcare

When a child not only throws a ball farther than she had previously, but also changes the way the throws the ball, the change is called A cumulative B multifactoral C quantitative D qualitative The answer correct is A

asked by Abbie on January 8, 2010
84. math

2. Mrs. young has her 18 students seated in a circle. They are evenly spaced and numbered in order. which student is directly opposite these three students? .student#1? .student#5? .student#18?

asked by afo on December 4, 2009
85. math

a teacher asks four students to write equations. the table shows the responses. student 1= 7x+x-8 = 2(4x-4) student 2= 6(x+2)+2x = 5x+2+8x student 3= 8x+x-5 = 9x+8 student 4= 6(2-x)+3 = -2(3x+2) which 2 students have an equation that has no solution A.1&2

asked by cxe on November 12, 2018
86. Statistics

The results of a poll are stated as follows: “Based on a survey of 156 randomly selected students, 90% of the student body of 2870 students agree that no student should have to take final exams in two consecutive exam periods”. If 2578 students

asked by Angela on April 13, 2016
87. Physics

Kevin stands at the edge of a cliff, holding one ball in each hand. He throws one of the balls straight up with speed v, and at the same time he throws the other ball straight down, also with speed v. Ignoring air resistance, which ball hits the ground

asked by Gharib on October 26, 2010
88. Physics

Lily throws a ball at an angle of 53.13 degrees above the horizontal from a building that is 10m high. The ball has a speed of 12m/s, .6 seconds after she throws it. What was the initial speed of the ball? This is a vector problem and uses variables such

asked by Hasan on November 6, 2015
89. English

1. which of the following sentences is grammatically correct? A. The student wrote too slow to finish the exam, but he has always been a slowly writer. B. The student wrote too slow to finish the exam, but he has always been a slow writer. C. The student

asked by rips2309 on May 22, 2017
90. Physics I (Classical)

Three students have been studying relative motion and decide to do an experiment to demonstrate their knowledge. The experiment plan calls for Jane to drive her pickup in a straight line across the parking lot at a constant speed of 11.2 m/s. Fred is in

asked by Victoria on June 3, 2016
91. physics

A boy 14.0m above the ground in a tree throws a ball for his dog, who is standing right below the tree and starts running the instant the ball is thrown. If the boy throws the ball upward at 50.0∘ above the horizontal, at 8.00m/s .

asked by Anonymous on September 18, 2014
92. Physics 11

A student throws a .1kg ball at a wall. The ball hits the wall perpendicularly with a speed of 5m/s & then bounces back w/ a new speed of 4m/s. What impulse is given to the ball by the wall? I used deltaP= m deltaV so deltaP= .1*(-1) to get -.1N-s. I got

asked by Kayla on May 30, 2017
93. Physics

A wrecking ball is swinging at just the right height so that the student can stand at the bottom of the trajectory (lowest point) and grab onto the ball to swing – something that is just way too tempting for this inquisitive student. In order to justify

asked by Amy on February 9, 2017
94. Physics

A student throws a ball vertically upward such that it travels 9.0 m to its maximum height. If the ball is caught at the initial height 2.4s after being thrown, what is the ball's average speed? I know average speed is change in distance over change in

asked by Jacob on November 28, 2007
95. English

1)which of the following sentences is grammatically correct? A. The student wrote too slow to finish the exam, but he has always been a slowly writer. B. The student wrote too slow to finish the exam, but he has always been a slow writer. C. The student

asked by pal0893 on May 15, 2017
96. Physics

A boy is standing on a skateboard holding two 5.0 kg bowling balls. Initially they are moving to the left at a speed of 3.0 m/s. At one point the boy throws one ball to the right at 4.0 m/s causing his speed to increase. Before he can slow down, he throws

asked by Jordan on November 29, 2012
97. Physics

A juggler throws a ball straight up into the air and it takes 2.80 seconds to reach its peak. How many seconds will it take after that to fall back into his hand? Assume he throws and catches the ball at the same height.

asked by Jacob on October 21, 2013
98. milford

Suppose that a man throws a ball from the front of a train that is moving at 100 km/hr. If he throws the ball forward at 10 km/hr, what is the speed apparent to the man?

asked by sue on November 29, 2011
99. Physics

If a juggler throws a ball (10cm in diameter) 2.4m vertically above the level of his hand to the ceiling; 1. What is it's initial velocity? I work out 0m/s? 2. How long does it take for the ball to hit the ceiling? 3. If he throws a second ball at the same

asked by Soupie on April 12, 2011