Friday

February 27, 2015

February 27, 2015

Number of results: 92,073

**Physics **

A ball is thrown horizontally from the top of a 65 m building and lands 105 m from the base of the building. Ignore air resistance, and use a coordinate system whose origin is at the top of the building, with positive y upwards and positive x in the direction of the throw. 1...
*September 11, 2014 by Lauren HELP *

**Physics**

A ball is thrown horizontally from the top of a building 45.2 m high. The ball strikes the ground at a point 78.9 m from the base of the building. The acceleration of gravity is 9.8 m/s 2 . Find the time the ball is in motion, initial velocity, and x and y components
*November 10, 2013 by Bob*

**Physics**

A ball is thrown horizontally from the top of a building 17.6 m high. The ball strikes the ground at a point 67.7 m from the base of the building. The acceleration of gravity is 9.8 m/s2. Find the time the ball is in motion
*October 26, 2014 by Maurissa*

**Physics**

A ball is thrown horizontally from the top of a building 55.4 m high. The ball strikes the ground at a point 65 m from the base of the building. The acceleration of gravity is 9.8 m/s2 . Find the time the ball is in motion in seconds.
*January 30, 2011 by Ashley*

**Physics Honors**

A basketball is thrown horizontally from a window that is 22 meters high. If the initial velocity of the ball 18 m/s, find how long the ball takes to reach the ground and how far the ball lands from the building?
*October 23, 2011 by Allison*

**physics**

A ball is thrown horizontally from the top of a building 30.1 m high. The ball strikes the ground at a point 66.8 m from the base of the building. The acceleration of gravity is 9.8 m/s2 . Find the time the ball is in motion. Answer in units of s
*October 20, 2011 by matt*

**physics**

A ball is thrown horizontally from the top of a building 30.1 m high. The ball strikes the ground at a point 66.8 m from the base of the building. The acceleration of gravity is 9.8 m/s2 . Find the time the ball is in motion. Answer in units of s
*October 20, 2011 by matt*

**physics**

A ball is thrown horizontally from the top of a building 30.1 m high. The ball strikes the ground at a point 66.8 m from the base of the building. The acceleration of gravity is 9.8 m/s2 . Find the time the ball is in motion. Answer in units of s
*October 20, 2011 by matt*

**physics**

A ball is thrown horizontally from the top of a building 17.6 m high. The ball strikes the ground at a point 67.7 m from the base of the building. The acceleration of gravity is 9.8 m/s^2 Find the time the ball is in motion. Answer in units of s
*November 19, 2012 by Liz*

**Physics**

A ball is thrown horizontally from the top of a building 30.1 m high. The ball strikes the ground at a point 66.8 m from the base of the building. The acceleration of gravity is 9.8 m/s2 . Find the time the ball is in motion. Answer in units of s
*November 8, 2014 by None*

**physics**

A ball is thrown horizontally from the top of a building 32.3 m high. The ball strikes the ground at a point 110 m from the base of the building. The acceleration of gravity is 9.8 m/s 2 . Find the time the ball is in motion. Answer in units of s
*October 14, 2013 by Kimberly*

**Physics test review**

A ball is thrown horizontally from the top of a building 30.1 m high. The ball strikes the ground at a point 66.8 m from the base of the building. The acceleration of gravity is 9.8 m/s2 . Find the time the ball is in motion. Answer in units of s Find the initial velocity of ...
*November 8, 2014 by ann*

**Physics**

Hypothetically, you are standing on the balcony of an apartment on the 10th level of a building and you throw a ball at some angle,è , above the horizontal away from the building. the ball lands on the ground 10m from the building, 3.2s after it was thrown. the height from ...
*April 26, 2012 by Rodney *

**Physics**

A ball is thrown horizontally from the roof of a building 29.7 m high at 39.6 m/s. (a) What is the vertical velocity of the ball when it lands? (use down as the positive y-axis direction)b) What is the ball’s total velocity (speed and direction) when it lands?
*January 23, 2012 by Katie*

**Physics**

HELP PLEASE. Hypothetically, you are standing on the balcony of an apartment on the 10th level of a building and you throw a ball at some angle, 0 , above the horizontal away from the building. the ball lands on the ground 10m from the building, 3.2s after it was thrown. the ...
*April 26, 2012 by Melissa*

**Physics**

A ball is thrown horizontally from the top of a building 45.9 m high. The ball strikes the ground at a point 121 m from the base of the building. The acceleration of gravity is 9.8 m/s2 . Find the time the ball is in motion. Answer in units of s Find the initial velocity of ...
*November 16, 2014 by Frank*

**Physics**

A ball is thrown at an angle of 37.1degrees above the horizontal from a point on the top of a building and 60m from the edge of the building. It just misses the edge of the building and continues on towards the ground. The building is 50m high. At what speed was the ball ...
*March 13, 2008 by Anonymous*

**Physics**

A ball is thrown horizontally from the top of a building 21.6 m high. The ball strikes the ground at a point 123 m from the base of the building. Find the x component of its velocity just before it strikes the ground. Find the y component of its velocity just before it ...
*February 2, 2012 by Anonymous*

**Physics**

A ball is thrown horizontally from the top of a building 21.6 m high. The ball strikes the ground at a point 123 m from the base of the building. Find the x component of its velocity just before it strikes the ground. Find the y component of its velocity just before it strikes...
*February 4, 2012 by Madison*

**physics**

A ball is thrown horizontally from the top of a building 17.6 m high. The ball strikes the ground at a point 67.7 m from the base of the building. The acceleration of gravity is 9.8 m/s^2 1. Find the time the ball is in motion. Answer in units of s. 2. Find the initial ...
*November 19, 2012 by Liz*

**physics**

A ball is thrown horizontally from the top of a building 43.4 m high. The ball strikes the ground at a point 57.3 m from the base of the building. The acceleration of gravity is 9.8 m/s^2. a. Find the time the ball is in motion. Answer in units of s. b. Find the initial ...
*January 2, 2015 by Kimberly*

**physics**

A ball is thrown horizontally with an initial velocity of 20.0 m/s from the edge of a building of a certain height. The ball lands at a horizontal distance of 82.0 m from the base of the building. What is the height of the building?
*September 22, 2010 by sara*

**Physics**

A ball thrown horizontally at 22.3 m/s from the roof of a building lands 31.0 m from the base of the building. How high is the building?
*October 13, 2011 by Millie*

**physics**

A ball thrown horizontally at 22.3 m/s from the roof of a building lands 31.0 m from the base of the building. How high is the building?
*October 13, 2011 by Tina*

**Physics**

A ball is thrown horizontally at 12.2 m/s from the roof of a building and lands 21.0 m from the base of the building. How high is the building?
*September 17, 2013 by Allyssa*

**Physics(I Have No Idea!!) :)**

A ball is thrown at 30 m/s horizontally off a building. it lands 100 meters from the base of the building. How high is the building?
*February 24, 2011 by Jessica*

**Physics**

A ball thrown horizontally at 22.2 m/s from the roof of a building lands 35.0 m from the base of the building. How high is the building? I have no idea how to even start this problem. Please help!
*November 4, 2013 by Bree*

**phusics**

A ball is thrown vertically upward from top of a building with speed of 20m/s. On the way back ball misses the building and lands on the ground. Total time the ball is in air is 6 seconds. Determine the height of the building.
*February 14, 2011 by mark matat*

**AP Physics**

A ball is thrown horizontally from the top of a building 51 m high. The ball strikes the ground at a point 120 m from the base of the building. The acceleration of gravity is 9.8 m/s 2 Find the x component of its velocity just before it strikes the ground. Answer in units of m...
*September 11, 2012 by Noah*

**physics**

A ball is thrown horizontally off the top of a 67 m tall building at a velocity of 7.3 m/s. How far did the ball land from the base of the building? Round your answer to 2 decimal places.
*December 6, 2010 by byung*

**physics**

A ball is thrown horizontally off the top of a 65 m tall building at a velocity of 7.8 m/s. How far did the ball land from the base of the building? Round your answer to 2 decimal places.
*November 11, 2012 by Sara*

**physics**

A ball is thrown horizontally off the top of a 65 m tall building at a velocity of 7.8 m/s. How far did the ball land from the base of the building? Round your answer to 2 decimal places.
*November 11, 2012 by Sara*

**physics**

Assume acceleration due to gravity=10 m/s. A ball is thrown vertically upward from top of a building with speed of 20 m/s. On the way back ball misses the building and lands on the ground. Total time the ball is in air is 6 seconds. Determine the height of the building with ...
*February 14, 2011 by Mark*

**general physics**

Assume acceleration due to gravity=10 m/s. A ball is thrown vertically upward from top of a building with speed of 20 m/s. On the way back ball misses the building and lands on the ground. Total time the ball is in air is 6 seconds. Determine the height of the building with ...
*February 14, 2011 by mark matat*

**Physics**

A ball thrown horizontally at 18.3 m/s from the roof of a building lands 36.3 m from the base of the building. How tall is the building?
*November 30, 2010 by Chris*

**physics**

A ball thrown horizontally at 13.0m/s from the roof of a building lands 21.4m from the base of the building. How tall is the building?
*February 5, 2015 by heather*

**Physics**

A ball is thrown from a building standing 30m high, landing 10m away from the building 3.2 seconds after it was thrown. Find the angle above the horizontal and the initial velocity of the ball
*April 25, 2012 by James*

**physics**

A ball is thrown horizontally from a building of height 80m. the kine joining the top of the building to the point where it hits the ground makes an angle of 45 degrees with the ground. what is the initial velocity of the ball?
*September 19, 2014 by aditya*

**physics**

A ball thrown horizontally at 17.0 m/s from the roof of a building lands 36.3 m from the base of the building. How tall is the building? could someone PLEASE tell me how to go about solving this problem!
*May 31, 2009 by reese*

**Physics**

Ball A is thrown straight down off the top of a tall building with an initial velocity of 20m/s. Ball b is thrown straight up from the top of the same building with initial velocity of 20 m/s. Which ball, if either, experiences the greater acceleration after leaving the ...
*February 7, 2014 by Chris*

**Physics **

A ball is tossed from an upper-story window of a building. The ball is given an initial velocity of 8.15 m/s at an angle of 18.5o below the horizontal. It strikes the ground 3.30 s later. How far horizontally from the base of the building does the ball strike the ground? What ...
*February 7, 2012 by Chloe *

**physics**

A ball is thrown upward with an initial velocity of 6.0m/s by someone on top of the building 34m tall who is leaning over the edge so that the ball will not strike the building on the return trip. (a) How far above the ground will the ball be at the end of 1.0s? (b) What is ...
*April 10, 2012 by jackie*

**Physical Science**

Four balls are taken to the top of a building. Ball 1 is dropped (zero initial velocity). Ball 2 is thrown straight up with a velocity of 3 m/s. Ball 3 is thrown straight out with a horizontal velocity of 3 m/s. Ball 4 is thrown straight down with a velocity of 3 m/s. Which ...
*April 28, 2013 by ayana*

**Physics**

A ball is tossed from an upper-story window of a building. The ball is given an initial velocity of 7.70 m/s at an angle of 23.0° below the horizontal. It strikes the ground 6.00 s later. (Ignore air resistance.) (a) How far horizontally from the base of the building does the ...
*October 13, 2009 by Maria*

**Physics urgent pls!**

A ball is tossed from an upper-storey window of a building.The ball is given an initial velocity of 8 m/s at an angle of 20 degrees below the horizontal.it strikes the ground 3s later .(a) How far horizontally from the base of the building does the ball strike the ground? (b)...
*February 22, 2013 by Sammie*

**physics**

A person standing on top of a building throws a ball with a horizontal velocity of 14 m/s. If the ball strikes the ground 65 m from the base of the building, how high is the building?
*June 13, 2014 by Dasa *

**physic**

Hi! Question:A ball is tossed from an upper-story window of a building.The ball is given an initial velocity of 7.80m/s at an angle of 21.0 degrees below the horizontal.It strikes the ground 3.00s later. A.How far horizontally from the base of the building does the ball strik ...
*September 30, 2009 by Chan*

**Physics**

A ball is thrown from the top edge of a building with initial velocity components of 15m/s(up) vertically and 20m/s horizontally. It strikes ground 140m from the base of the building. What is the height of the building? I tried using V2^2 = V1^2 + 2ad and it gave me 11.25 ...
*March 13, 2008 by Anonymous*

**Physics**

A ball is thrown from the top edge of a building with initial velocity components of 15m/s(up) vertically and 20m/s horizontally. It strikes ground 140m from the base of the building. What is the height of the building? I tried using V2^2 = V1^2 + 2ad and it gave me 11.25 ...
*March 13, 2008 by Anonymous*

**Physics**

A ball is thrown from the top edge of a building with initial velocity components of 15m/s(up) vertically and 20m/s horizontally. It strikes ground 140m from the base of the building. What is the height of the building? I tried using V2^2 = V1^2 + 2ad and it gave me 11.25 ...
*March 15, 2008 by Anonymous*

**Physics **

A ball is tossed from an upper-story window of a building. The ball is given an initial velocity of 8.15 m/s at an angle of 18.5o below the horizontal. It strikes the ground 3.30 s later. How far horizontally from the base of the building does the ball strike the ground? ...
*February 5, 2012 by Lance*

**physics**

A)A ball is tossed from an upper-story window of a building. The ball is given an initial velocity of 8.15 m/s at an angle of 19.0o below the horizontal. It strikes the ground 2.50 s later. How far horizontally from the base of the building does the ball strike the ground? B)...
*January 30, 2014 by Teddy*

**physics**

A ball is thrown horizontally from the roof of a building 47.9 m tall and lands 35.4 m from the base. What was the ball's initial speed in m/s? Hint: Find the horizontal velocity by calculating the time of flight and using the horizontal distance.
*October 10, 2014 by durr*

**physics**

A tennis ball is thrown horizontally at a speed of 10 m/s from the top of a building 78.4 meters high. How long does it take the ball to hit the street?
*May 22, 2012 by Elizabeth*

**Physics(urgent)**

A ball is thrown horizontally from the roof of a building 58.5 m tall and lands 38.7 m from the base. What was the ball's initial speed in m/s? Hint: Find the horizontal velocity by calculating the time of flight and using the horizontal distance.
*October 1, 2009 by Mo*

**physics**

Part 1: A ball is thrown horizontally from the top of a building 28.6 m high. The ball strikes the ground at a point 80.3 m from the base of the building. The acceleration of gravity is 9.8 m/s^2. Find the time the ball is in motion. Answer in units of s. Part 2: Find the ...
*October 25, 2010 by autumn*

**physics**

a ball is thrown vertically upward from the top of the building with a velocity 10m/s.it reaches the ground in 5 sec.Find the height of the building the ball strikes the ground?
*September 13, 2012 by p*

**Physics**

A ball is thrown horizontally with a velocity of 40 m/s from the top of a building. Find its velocity and displacement after 3 s.
*November 24, 2014 by Jan*

**Math: Word Problem**

A ball is thrown upward from the top of a building which is 96ft tall w/ Initial velocity of 80 ft per sec. Distance s(ft) of ball from the ground after t sec is s=96+80t-16t^(2) 1) how many sec. will the ball pass the top of the building when it is coming down? How would I ...
*September 7, 2010 by Amy~*

**physics.**

Part 1: A ball is thrown horizontally from the top of a building 28.6 m high. The ball strikes the ground at a point 80.3 m from the base of the building. The acceleration of gravity is 9.8 m/s^2. Find the time the ball is in motion. Answer in units of s. Part 2: Find the ...
*October 25, 2010 by Autumn*

**Physics**

Two baseballs are thrown off the top of a building that is 7.24 m high. Both are thrown with initial speed of 63.3 mph. Ball 1 is thrown horizontally, and ball 2 is thrown straight down. What is the difference in the speeds of the two balls when they touch the ground? (Neglect...
*September 21, 2010 by Gina*

**Physics**

You are walking around your neighborhood and you see a child on top of a roof of a building kick a soccer ball. The soccer ball is kicked at 41° from the edge of the building with an initial velocity of 21 m/s and lands 59 meters away from the wall. How tall is the building ...
*October 10, 2013 by Jennifer*

**physics**

A ball is thrown horizontally from the roof of a building 33.0 m tall and lands 20.5 m from the base. What was the ball's initial speed?
*September 21, 2010 by Jamie*

**physics**

A ball is thrown horizontally from the roof of a building 59.0 tall and lands 27.4 from the base. What was the ball's initial speed?
*September 21, 2011 by alexis*

**Physics**

A ball is thrown horizontally from the roof of a building 55 m tall and lands 50 m from the base. What was the ball's initial speed?
*October 13, 2011 by Millie*

**physics**

A ball is thrown horizontally from a 15m -high building with a speed of 8.0m/s. How far away from the base of the building does the ball hit the gnd. I'm needing help setting this up. I know change of Y is -15m, and the "a" is -9.8m/s^2, but i get lost from there...?
*September 26, 2010 by danny *

**physics**

A ball is thrown horizontally from the top of a building 150 meters high. The ball strikes the ground 56 meters horizontally from the point of release. What is the speed of the ball just before it strikes the ground?
*December 9, 2013 by Abigail*

**physics**

A ball is thrown horizontally from the top of a building 150 meters high. The ball strikes the ground 56 meters horizontally from the point of release. What is the speed of the ball just before it strikes the ground?
*December 9, 2013 by Abigail*

**physics**

A ball is thrown horizontally from the top of a building 150 meters high. The ball strikes the ground 56 meters horizontally from the point of release. What is the speed of the ball just before it strikes the ground?
*December 9, 2013 by Abigail*

**physics**

A ball is thrown horizontally from the roof of a building 60 m tall and lands 45 m from the base. What was the ball's initial speed? _______m/s
*September 21, 2010 by Andy*

**Physics**

You throw a ball horizontally off of a building with a horizontal velocity of 5 m/s. What's the ball horizontal velocity 8 seconds later? How high should the building be if you want the ball to fall for a total of 12 seconds?
*June 21, 2011 by Jennifer*

**Physics**

You throw a ball horizontally off of a building with a horizontal velocity of 10 m/s. What is the ball’s horizontal velocity 5 seconds later? How high should the building be if you want the ball to fall for a total of 10 seconds?
*October 6, 2011 by Angel*

**Physics**

From the window of a building, a ball is tossed from a height y0 above the ground with an initial velocity of 9.40 m/s and angle of 23.0° below the horizontal. It strikes the ground 6.00 s later. Initial velocity components: vx = 8.65 m/s vy = -3.67 m/s (c) Find the equations ...
*September 15, 2013 by <3*

**phy**

A ball is thrown from the window of a high-rise building with an initial velocity of 6.1 m/s at an angle of 32 deg. below the horizontal. The bill strikes the ground 4.4 seconds after being thrown. Find the height from which the ball was thrown.
*October 6, 2010 by Anonymous*

**physical**

A ball is thrown from the window of a high-rise building with an initial velocity of 7.7 m/s at an angle of 34 deg. below the horizontal. The bill strikes the ground 4.2 seconds after being thrown. Find the height from which the ball was thrown.
*October 15, 2011 by Anonymous*

**Physics**

From the window of a building, a ball is tossed from a height y0 above the ground with an initial velocity of 8.00 m/s and angle of 20.0 degrees below the horizontal. It strikes the ground 3.00 s later. (a) If the base of the building is taken to be the origin of the ...
*September 21, 2009 by Vico*

**physics**

A ball is thrown upward from the top of a 40.0 m tall building. The ball's initial speed is 12.0 m/s. At the same instant, a person is running on the ground at a distance of 31.0 m from the building. What must be the average speed of the person if he is to catch the ball at ...
*September 17, 2009 by sandhu*

**Physics**

A ball is thrown upward from the top of a 50.0 m tall building. The ball's initial speed is 12.0 m/s. At the same instant, a person is running on the ground at a distance of 44.0 m from the building. What must be the average speed of the person if he is to catch the ball at ...
*February 5, 2012 by Kelly*

**physic**

A ball is thrown upward from the top of a 24.4 m tall building. The ball's initial speed is 12 m/s. At the same instant, a person is running on the ground at a distance of 31.4 m from the building. What must be the average speed of the person if he is to catch the ball at the ...
*August 29, 2012 by Anonymous*

**Physics**

A ball is thrown upward from the top of a 24.6 m tall building. The ball's initial speed is 12 m/s. At the same instant, a person is running on the ground at a distance of 31.2 m from the building. What must be the average speed of the person if he is to catch the ball at the ...
*September 23, 2012 by Jenn*

**Physics**

A ball is thrown straight upward (along the y-axis) with an initial velocity of 16 m/s from the top of a building located 20 m above ground. Find the maximum height of the ball. In other words, find the ball's maximum distance from the ground. Be aware that once you find the ...
*June 20, 2011 by Promise*

**physics**

A ball is thrown upward from the top of a 24.4-m-tall building. The ball's initial speed is 12 m/s. At the same instant, a person is running on the ground at a distance of 30.2 m from the building. What must be the average speed of the person if he is to catch the ball at the ...
*August 30, 2011 by mae*

**college physics**

A ball is thrown from a 20.0m high building and hits the ground 6.0m from the building. With what horizontal velocity was it thrown?
*October 30, 2012 by Gee*

**Physics**

From the window of a building, a ball is tossed from a height y 0 above the ground with an initial velocity of 10.00 m/s and angle of 25.0° below the horizontal. It strikes the ground 3.60 s later. If the base of the building is taken to be the origin of the coordinates, with ...
*October 10, 2013 by emanuel*

**physics**

Stones are thrown horizontally, with the same initial velocity, from the tops of two different buildings, A and B. The stone from building A lands 4 times as far from the base of the building as does the stone from building B. What is the ratio of building A's height to ...
*January 31, 2014 by Teddy*

**physics**

Stones are thrown horizontally, with the same initial velocity, from the tops of two different buildings, A and B. The stone from building A lands 4 times as far from the base of the building as does the stone from building B. What is the ratio of building A's height to ...
*February 1, 2014 by Teddy*

**College algebra**

When a ball is thrown up into the air, it makes the shape of a parabola. The equation S= -5t^2 + v*t + k gives the height of the ball at any time, t in seconds, where “v” is the initial velocity (speed) in meters/sec and “k” is the initial height in meters (as if you were on ...
*June 16, 2010 by Dimpleface*

**physics**

A ball is thrown vertically up from the edge of a 150 m building with a veloicty of 10m/s. (A) how high did the ball rise? (b) how much time did it take fort he ball to reach this height ? (C) what is the velocity oft he ball as it strikest he ground ? (D) how long does it ...
*December 21, 2014 by christoper allen*

**Physics**

A ball is thrown with initial velocity Vo=20.0 m/s from the top of a 50.0m tall building. Find the velocity Vg with which the ball strikes the ground. Find time Ttotal it takes for the ball to move to the ground.
*July 10, 2011 by Myyke*

**Calculus (Vector-Valued Functions)**

"a ball is thrown horizontally from the top of a cliff 256 ft high with an intial speed of 50 ft/sec. find the time of flight of the ball and the distance from thr base of the cliff to the point where the ball lands"
*January 27, 2012 by TheThinker*

**physic**

A ball is shot from the top of a building with an initial velocity of 16m/s at an angle θ = 43∘ above the horizontal. Part A What are the horizontal and vertical components of the initial velocity? If a nearby building is the same height and 55m away, how far below ...
*October 11, 2013 by koram*

**physics**

Stones are thrown horizontally with the same velocity from the tops of two different buildings. One stone lands twice as far from the base of the building from which it was thrown as does the other stone. Find the ratio of the height of the taller building to the height of the...
*September 15, 2012 by tom*

**Physics**

Stones are thrown horizontally with the same velocity from the tops of two different buildings. One stone lands twice as far from the base of the building from which it was thrown as does the other stone. Find the ratio of the height of the taller building to the height of the...
*September 15, 2013 by Tonya*

**Physics**

Stones are thrown horizontally with the same velocity from the tops of two different buildings. One stone lands four times as far from the base of the building from which it was thrown as does the other stone. Find the ratio of the height of the taller building to the height ...
*February 18, 2015 by Anonymous*

**physics ( help)**

Hypothetically, if you were standing on the balcony of an apartment on the 10th level of building and you throw a ball at 30° above the horizontal away from the building at 4.5m/s, how far from the building would the ball land?. The height from which the ball is thrown is ...
*April 25, 2011 by H.T*

**PROJECTILE MOTION **

A ball is thrown horizontally from the top of a cliff 50m high with a velocity of 7m/s. How far from the base of the building does the ball land. This is what I think is how you do the question(Please correct me if I am wrong). y=vt+.5a(t)² 50=0+.5(9.8)t² 10.204=t² t=3.194 ...
*September 24, 2012 by Booker Perry*

**Math**

A man throws a ball horizontally from the top of a hill 4.9m high. He wants the ball to clear a fence 2.4m high standing on horizontal surface and 8m horizontally away from the point of projection. Find the minimum speed at which the ball must be thrown.
*February 13, 2014 by Kiran*

**Physics **

A man throws a ball horizontally from the top of a hill 4.9m high. He wants the ball to clear a fence 2.4m high, standing on a horizontal surface and 8m horizontally away from the point of projection. Find the minimum speed at which the ball must be thrown.
*February 13, 2014 by Kiran*

**physics**

A ball is thrown upward from the top of a 27.0-m-tall building. The ball's initial speed is 12 m/s. At the same instant, a person is running on the ground at a distance of 31.2 m from the building. What must be the average speed of the person if he is to catch the ball at the ...
*May 13, 2007 by micole*

**physics**

A blue ball is dropped from a height of 3.8 m above a classroom floor while a red ball held at the same height is thrown horizontally with a speed of 5 m/sec. Find The initial velocity and acceleration of each ball (the positive x-direction is the direction the ball is thrown ...
*September 21, 2014 by Anonymous*

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