# A ball is dropped from top of a building.if the distance travelled by ball in the last third of total time is 10m,the height of building is

39,541 questions-
## physics

A ball is dropped from top of a building.if the distance travelled by ball in the last third of total time is 10m,the height of building is

*asked by Nitin on July 12, 2011* -
## ap physics

a ball 1 is thrown horizontally from the top of a building that is 50 meters tall. if another ball 2 is dropped at the same time as the first is released, which ball will hit the ground first? A. ball 1 B. ball 2 c. they land at the same D. depends of the

*asked by Anonymous on October 31, 2015* -
## Math

A ball rebounds 1/2 of the height from which it is dropped. It is dropped 56m from the building and it kept bouncing. How far would the ball have travelled up and down when it strikes the ground for the 6th time?

*asked by Aubrie on July 19, 2016* -
## math

a ball is dropped from a height of 3m and bounces on the ground . At the top of each bounce, the ball eaches 60% of its previous height. Calculate the total distance travelled by the ball when it hits the ground for the fifth time

*asked by Melissa on December 17, 2011* -
## math

Here is the question: a ball is dropped from a height of 3m and bounces on the ground . At the top of each bounce, the ball eaches 60% of its previous height. Calculate the total distance travelled by the ball when it hits the ground for the fifth time? I

*asked by zach on January 16, 2017* -
## Physics/Science #3

A ball is thrown vertically downward from the top of a 35.9-m tall building. The ball then passes the top of a window that is 10.7 m above the ground 2.00 s after being thrown. What is the speed of the ball as it passes the top of the window? The equation

*asked by TechnoBoi11 on January 25, 2007* -
## physics

an elastic ball rebounces 70% when it is dropped from the height. if it is dropped from 60m what is the total distance travelled by the ball

*asked by Anonymous on May 26, 2012* -
## maths

A ball is dropped from a height of 1 metre. At every bounce it travels half of the height it travelled it with the previous flight. Find the total distance travelled when the ball comes to rest.

*asked by anitha on December 27, 2012* -
## physics

A ball is dropped from the top of a building. The balls fall 3 times farther during its last second of freefall than it did during its third second of freefall. The ball fell 4.9 meters during its first second, how tall is the building and how much time is

*asked by H on November 11, 2012* -
## physics

A ball is dropped from the top of a building. The balls fall 3 times farther during its last second of freefall than it did during its third second of freefall. The ball fell 4.9 meters during its first second, how tall is the building and how much time is

*asked by hi on October 25, 2014* -
## math

a ball is dropped from a height of 5m. after each bounce, the ball rises to 45% of its previous height. what the total vertical distance that the ball has travelled after it has hit the ground for for the 6th time? what are the formulas? because the ball

*asked by tee on November 18, 2008* -
## Math- Check over please

A ball is dropped from a height of 3m and bounces on the ground. At the top of each bounce, the ball reaches 60% of it's previous height. Calculate the total distance travelled by the ball when it hits the ground the fifth time. Could you please check over

*asked by Mae on January 5, 2009* -
## Geometric Series question? Help!?

A bouncy ball bounces to 2/3 of its height when dropped on a hard surface. Suppose the ball is dropped from 20 m. What is the height of the ball after the 6th bounce? Answer = 1280/729 m OR 1.75 m What is the total distance travelled by the ball after 10

*asked by Sam on May 29, 2013* -
## math

A ball is dropped from a height of 5 ft. Assuming that on each bounce the ball rebounds to one-third of its previous height, find the total distance travelled by the ball.

*asked by Mike on December 6, 2010* -
## 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

*asked by Amy~ on September 7, 2010* -
## physic

A ball is dropped from the top of an apartment building. A person is on a patio somewhere beneath the top of the apartment building and the person notices the ball takes 0.11 seconds to fall from the top of his patio to the bottom of his patio. The height

*asked by elle on September 24, 2015* -
## Physics

a ball is released from the top of a 67.0 m high building. At the same instant a second ball is shot straight up from the ground with an initial speed of 20.0 m/s, directly below the point where the first ball was dropped. Ignore air drag and calculate a.

*asked by Chris on August 13, 2018* -
## Physics

A steel ball is dropped from a building's roof and passes a window, taking 0.13 s to fall from the top to the bottom of the window, a distance of 1.20 m. It then falls to a sidewalk and bounces back past the window, moving from bottom to top in 0.13 s.

*asked by monnie on October 8, 2010* -
## 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

*asked by Anonymous on August 29, 2012* -
## 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

*asked by Jenn on September 23, 2012* -
## 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

*asked by sandhu on September 17, 2009* -
## 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

*asked by Kelly on February 5, 2012* -
## 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

*asked by mae on August 30, 2011* -
## physical science

A stone is dropped from rest at the top of a tall building. Determine the distance the ball has traveled after ½ second, one second, 3/2 seconds, and 2 seconds. How fast is the ball moving at the end of the 2 seconds?

*asked by Ed on January 25, 2012* -
## Math

A rubber ball is dropped from the top of a building, which is 40 ft. above the ground. Each time the ball hits the sidewalk, it rebounds 77% of its previous height. How high will the ball rebound after its sixth bounce? Round your answer to the nearest

*asked by Max on January 5, 2018* -
## physics

a tennis ball is dropped from the top of 12.2 m tall building. b) how long does it take for the ball to hit he ground? c) what is the velocity of the ball the split second before it hits the ground?

*asked by Isis on November 29, 2012* -
## math

Fay's rubber ball bounces exactly half the height from which it is dropped. she drops the ball from the top of a building that is 64 meters tall. how high will the ball bounce on its eight bounces? please help me

*asked by jasmin on October 28, 2013* -
## physical science

if a cannon ball and a bowling ball were dropped at the same time from the top of a building, the instant before the cannon ball hit the ground it has greater?

*asked by Anonymous on September 9, 2009* -
## physics

The average velocity for a trip has a positive value. Is it possible for the instantaneous velocity at any point during the trip to have a negative value? (I'm thinking yes because derivatives can be negative but I'm not sure). also A ball is dropped from

*asked by Anonymous on January 2, 2009* -
## physics

A ball is dropped from an upper floor, some unknown distance above your apartment. As you look out of your window, which is 1.5 m tall, you observe that it takes the ball 0.18 seconds to traverse the length of the window. Determine how high above the top

*asked by ryan on January 30, 2015* -
## math

A steel ball is dropped from rest from the roof of a building. An observer standing behind a window that is part way down the building 120 cm high notes the ball takes 0.125 s to fall from the top to the bottom of the window. The ball continues to fall,

*asked by A on September 8, 2012* -
## Physics

Would someone please show me a way to work this out A ball is dropped from the top of a building 150 m high. (Ignore air resistance) A. How long does it take the ball to hit the ground? B. What is the speed of the ball when it hits the ground?

*asked by missy on September 13, 2011* -
## Physics

A ball is thrown upward with speed 12m/s from the top of a building. How much later must a second ball be dropped. From the same starting point if it is to hit the ground at the same time as the first ball? The initial position is 24m above the ground

*asked by Majiri on February 2, 2018* -
## Physics

A ball falls from the top of a building . through the air(air resistance is present) to the ground below. How does the KE just before hitting the ground compare to the PE at the top of the building? Isn't KE and PE equal to each other in this situation?

*asked by Andrea on October 17, 2007* -
## Physics

A ball is thrown down from the top of a building with a speed of 19.6m/s. The top of the building is 39.2m above the level of the sidewalk. The ball needs 1.46s to travel from the top of the building to the sidewalk. What is the velocity of the ball just

*asked by Anonymous on October 16, 2018* -
## Physics

Two balls (Ball 1 and Ball 2) are released from the top of a tower. Ball 2 is thrown 3.14 seconds after Ball 1 is dropped. Ball 2 is thrown downward with a velocity of 3.49 m/s. Determine how far Ball 1 has fallen (to two decimal points) by the time Ball 2

*asked by Ashley on September 12, 2012* -
## Physics

A ball is dropped from a building, after 2 sec another ball is thrown downward. After 6 sec the second ball overtook the first ball. Is the second ball has greater acceleration than the first ball? Explain.

*asked by Heeelp on February 25, 2017* -
## Physics

A ball is dropped from a building, after 2 sec another ball is thrown downward. After 6 sec the second ball overtook the first ball. Is the second ball has greater acceleration than the first ball? Explain.

*asked by Mike on November 8, 2015* -
## Physics

A ball is dropped from a building, after 2 sec another ball is thrown downward. After 6 sec the second ball overtook the first ball. Is the second ball has greater acceleration than the first ball? Explain.

*asked by Leaha Angelina on March 9, 2016* -
## physics - HELP ASAP!

A 3.60 kg ball is dropped from the roof of a building 184.8 m high. While the ball is falling to earth, a horizontal wind exerts a constant force of 12.1 N on the ball. (acceleration of gravity = 9.81 m/s^2) How far from the building does the ball hit the

*asked by Desperate Help! on November 7, 2009* -
## psyhics

A ball is dropped from the top of a 95 m building. With what speed does the ball hit the ground?

*asked by kyle on January 29, 2012* -
## physics

a ball is dropped from the top on an 80-m high building. what speed does the ball have in falling 3.5 s?

*asked by Katie on March 30, 2014* -
## Math

Please explain how to figure out the following 7th grade math problem: If a rubber ball bounces exactly 1/2 the height from which it is dropped; and it is dropped from the top of a building that is 64 meters tall, how high will the ball bounce on its

*asked by Jaleel on October 30, 2007* -
## Algebra

A ball is dropped from the height of 20m. It bounces 60% of its previous height each bounce. The total distance travelled is made of the upward and downward bounces. What is the total vertical distance the ball has travelled after the sixth bounce?

*asked by Muff on October 23, 2017* -
## Calculus

Hard rubber ball is thrown down from a building with a height of 5 metres. After each bounce, the ball rises to 4/5 of its previous height. Total vertical distance d ball has travelled at the moment it hits the ground for the 8th time, to the nearest 10th

*asked by Anonymous on September 18, 2011* -
## Math

A ball is dropped from a height of 16 feet. Each time the ball dropped h feet, it rebounds 0.81h feet. Find the total vertical distanced travelled by the ball.

*asked by Anonymous on May 13, 2015* -
## 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

*asked by micole on May 13, 2007* -
## 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.

*asked by mark matat on February 14, 2011* -
## Math grade 11 u

Jose bautista hits a baseball that travels for 142m before it lands. The flight of the ball can be modelled by a quadratic function in which x is the Horizontal distance the ball has travelled away from jose, and h(x) is the height Vertical distance of the

*asked by Sandy on July 22, 2015* -
## Physics

A 3.79 kg ball is dropped from the roof of a building 163.8 m high. While the ball is falling to Earth, a horizontal wind exerts a constant force of 11.5 N on the ball. It takes 5.77 second to hit the ground. How far from the building does the ball hit the

*asked by Sangita on December 17, 2010* -
## physics

A ball rolls along a desktop with an uniform velocity of 3 m/s. What is the displacement after 10 seconds have passed? A ball is thrown upward with an initial velocity of 18 m/s? What is the maximum height the ball reaches if the ball is assumed to leave

*asked by kim on November 8, 2011* -
## physics : HELP PLEASE

A ball rolls along a desktop with an uniform velocity of 3 m/s. What is the displacement after 10 seconds have passed? A ball is thrown upward with an initial velocity of 18 m/s? What is the maximum height the ball reaches if the ball is assumed to leave

*asked by kim on November 8, 2011* -
## physics : HELP PLEASE

A ball rolls along a desktop with an uniform velocity of 3 m/s. What is the displacement after 10 seconds have passed? A ball is thrown upward with an initial velocity of 18 m/s? What is the maximum height the ball reaches if the ball is assumed to leave

*asked by kim on November 8, 2011* -
## physics

*asked by kim on November 8, 2011* -
## algebra

a ball is dropped from the top of a building that is known to be 256 feet high.the formula for finding the height of the ball at any time t is h=256-16t^2,where t is measured in seconds.how many seconds will it take for the ball to hit the ground?

*asked by Anonymous on August 20, 2016* -
## 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

*asked by Anonymous on March 13, 2008* -
## physical

A ball is dropped from the roof a building which is 256m high.The height h of the ball at any instant t is described by h(t)= -16tsqure+256 Find 1)Instantaneous velocity of ball at t= 3sec 2)The time taken by ball to reach the ground level

*asked by Qandeel on June 25, 2015* -
## Physics

Part 1: Two balls (Ball 1 and Ball 2) are released from the top of a tower. Ball 2 is thrown 3.14 seconds after Ball 1 is dropped. Ball 2 is thrown downward with a velocity of 3.49 m/s. Determine how far apart Ball 1 and Ball 2 are after 5.02 seconds from

*asked by Ashley on September 12, 2012* -
## Physics

Part 1: Two balls (Ball 1 and Ball 2) are released from the top of a tower. Ball 2 is thrown 3.14 seconds after Ball 1 is dropped. Ball 2 is thrown downward with a velocity of 3.49 m/s. Determine how far apart Ball 1 and Ball 2 are after 5.02 seconds from

*asked by Ashley on September 12, 2012* -
## Math

a special rubber ball is dropped from the top of a wall that is 64 feet high. each time the ball bounces it rises half as high as the distance it fell. The ball is caught when it bounces 1foot high. how many times did the ball bounce?

*asked by Jewell on February 20, 2012* -
## Algebra

A ball is dropped from the top of a building that is 784 feet high. The height of the ball above ground level is given by the polynomial function h(t)= -16t to the second power + vot + ho where t is measured in seconds, vo is the initial velocity and ho is

*asked by Julie on July 28, 2013* -
## math

Problem: A ball is dropped from the top of a building that is 250 feet tall. The height h of the ball in feet after t seconds is modeled by the function h = -16t2 +250. How long will it take for the ball to reach the ground? Round your answer to the

*asked by michelle on January 13, 2015* -
## physics

A 2.63 kg ball is dropped from the roof of a building 180.6 m high. While the ball is falling to Earth, a horizontal wind exerts a constant force of 13.0 N on the ball. How long does it take to hit the ground? The acceleration of gravity is 9.81 m/s2 . How

*asked by jay on November 19, 2017* -
## Math quadratic function

Jose bautista hits a baseball that travels for 142m before it lands. The flight of the ball can be modelled by a quadratic function in which x is the Horizontal distance the ball has travelled away from jose, and h(x) is the height Vertical distance of the

*asked by Sandy on July 23, 2015* -
## Maths quadratic equation

A ball thrown vertically from the top of a building 96m at initial velocity 80m/sec.the distance 's' of the ball of the ground after 't' second is s=96+80t-4.5t^2. After how many seconds does the ball strike the ground...?

*asked by Akheel a on November 29, 2016* -
## Math grade 11 uni

Jose bautista hits a baseball that travels for 142m before it lands. The flight of the ball can be modelled by a quadratic function in which x is the Horizontal distance the ball has travelled away from jose, and h(x) is the height Vertical distance of the

*asked by Sandy on July 23, 2015* -
## 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

*asked by Maurissa on October 26, 2014* -
## 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

*asked by jackie on April 10, 2012* -
## calc

A light is at the top of a pole 80ft high. A ball is dropped at the same height from a point 20ft from the light. If the ball falls according to 2=16t^2, how fast is the shadow of the ball moving along the ground 1 second later? please help!!! Let x be the

*asked by keneth on November 9, 2006* -
## 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.

*asked by Ashley on January 30, 2011* -
## 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

*asked by matt on October 20, 2011* -
## 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

*asked by Liz on November 19, 2012* -
## 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

*asked by None on November 8, 2014* -
## 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

*asked by matt on October 20, 2011* -
## physics

*asked by matt on October 20, 2011* -
## Science-physics

A ball is thrown horizontally from the top of a building 37.5 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.

*asked by Maggie on November 16, 2015* -
## physics

a ball has a mass of 0.5kg dropped from a cliff top, the ball srtikes the sea below at a velocity of 10m/s. (a)what is the kinetic energy of the ball as it strikes the sea? (b) what was its potential energy before it was dropped? (c)from what height was it

*asked by sim on December 9, 2011* -
## Math

A ball is thrown straight up from the top of a building 148 ft. tall with an initial velocity of 72 ft per second. The distance s(t) (in feet) of the ball from the ground is given by s(t) = 148 + 72t − 16t2. Find the maximum height attained by the ball.

*asked by Reagan on July 12, 2015* -
## 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

*asked by mark matat on February 14, 2011* -
## 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

*asked by Mark on February 14, 2011* -
## 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

*asked by Bob on November 10, 2013* -
## 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

*asked by Kimberly on October 14, 2013* -
## physics

Distance travelled by a ball dropped from a cliff in the 10th second.

*asked by Aniruddh on August 13, 2016* -
## math

A ball is dropped from the roof a building which is 256 m high. The height h of the ball at any instant t is described by h(t) = – 16t2 + 256 Find i) Instantaneous velocity of ball at t = 3 seconds ii) The time taken by ball to reach the ground level.

*asked by malik on October 12, 2015* -
## Physics

A small ball of mass m is placed on top of a large ball of mass 3m. Both balls are dropped simultaneously from a height h = 5.50 m as shown in the figure. Assuming the radius of the large ball and small are small and thus negligible in comparison to the

*asked by Bill on July 11, 2018* -
## physics

a ball is dropped off a 20m high building, the ball weights 5 g. how long does it take to hit the ground and what is the instaneous speed of the the ball at each second of it's fall?

*asked by m,ary on October 17, 2010* -
## PHYSICS

During a tennis match a player serves the ball at 23.6 m/s with the center of the ball leaving the raquet horizontally 2.37m abovet eht court surface. The net is 12m away and .9m high. When the ball reaches the net a) does the ball clear it and b) what is

*asked by Bobby on October 24, 2006* -
## Math

1. If 100 is saved on October 1, 150 on October 2, 200 on October 3, and so on, how much is saved during October? 2. A Ping-Pong ball is dropped from a height of 16 ft and always rebounds 1/4 of the distance of the previous fall. a. What distance does it

*asked by Hershey on November 30, 2014* -
## Math

1. If 100 is saved on October 1, 150 on October 2, 200 on October 3, and so on, how much is saved during October? 2. A Ping-Pong ball is dropped from a height of 16 ft and always rebounds 1/4 of the distance of the previous fall. a. What distance does it

*asked by Hershey on November 30, 2014* -
## math

Vernon Wells hits a baseball that travels for 142m before it lands. The flight of the ball can be modelled by a quadratic function in which x is the horizontal distance the ball has travelled away from vernon, and h(x) is the height of ther ball at that

*asked by Taha on April 15, 2010* -
## Physics

A ball is dropped from the top of a building which is 39.2m above the level of the sidewalk. How long does it take for the ball to reach the sidewalk?

*asked by Anonymous on October 16, 2018* -
## Physics

A ball is dropped from the top of a building which is 39.2m above the level of the sidewalk. How long does it take for the ball to reach the sidewalk?

*asked by help on October 17, 2018* -
## Math

Suppose you drop a ball from the top of a five-story building onto the sidewalk 70 ft below. a. What is the initial velocity of the ball? b. Determine a function for the height of the ball t seconds after it's released. c. How long will the ball be in the

*asked by SC on March 24, 2009* -
## 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

*asked by ayana on April 28, 2013* -
## Physics

A ball is shot from the top of a building with an initial velocity of 20 m/s at an angle θ = 39° above the horizontal. If a nearby building is the same height and 55 m away, how far below the top of the building will the ball strike the nearby building?

*asked by Jen on February 26, 2017* -
## math

Suppose you drop a ball from the top of a five-story building onto the sidewalk 70 feet below. a. What is the initial velocity of the ball? b.Determine a function for the height of the ball t seconds after it's released. c. How long will the ball be in the

*asked by Sally on October 13, 2010* -
## Math

a light shines from the top of a pole 50ft high. a ball is dropped from the same height from a point 30 ft away from the light. how fast is the ball's shadow moving along the ground 1/2 sec later? (assume the ball falls at a distance of s=16t^2 in t sec)

*asked by Teri on June 8, 2012* -
## maths

a ball is dropped from a height of 40cm onto a horizontal surface and bounces in a vertical line until it eventually stops on the surface. the ball bounces in such a way that it loses ten percent of its height for each bounce and will continue to do this

*asked by Emma on May 25, 2007* -
## Scince: Physics

A ball is dropped from a building and falls with an acceleration of magnitude 10m/s^2. The distance between floors in the building is constant. The ball takes 0.5s to fall from the 14th to the 13th floor and 0.3s to fall from the 13th floor to the 12th.

*asked by Lynn on December 10, 2008* -
## physics

A 2.99 kg ball is dropped from the roof of a building 161.9 m high. While the ball is falling to Earth, a horizontal wind exerts a constant force of 12.3 N on the ball. How long does it take to hit the ground> The acceleration of gravity is 9.81 m/s2.

*asked by brian on November 7, 2010*

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