Sunday

April 20, 2014

April 20, 2014

Number of results: 9,415

**PHYSICS**

A 7 kilogram bowling ball is dropped from a fourth story window. If each story is 3 meters high, use energy conservation (not the equations of motion) to find the ball's velocity when it strikes the ground. Ignore air resistance. Thank you
*Thursday, February 23, 2012 at 7:51pm by GRISSELL*

**PHYSICS**

A 7 kilogram bowling ball is dropped from a fourth story window. If each story is 3 meters high, use energy conservation (not the equations of motion) to find the ball's velocity when it strikes the ground. Ignore air resistance.
*Sunday, February 26, 2012 at 7:42pm by TRACY*

**PHYSICS**

A ball of mass 0.150kg is dropped from a height of 1.25m. It rebounds from the floor to reach a height of 0.960m. What impulse was given to the ball by the floor?
*Saturday, March 29, 2008 at 4:39pm by JIM*

**physics**

A 0.1kg ball dropped on the floor hits with a speed of 4.0m/s and rebounds at a speed of 3.8m/s. Calculate the impulse delivered to the ball by the floor.
*Tuesday, October 2, 2012 at 4:45pm by taryn*

**Physics**

A ball is dropped from a height of 1.45m and rebounds to a height of 1.21m. Approximately how many rebounds will the ball make before losing 92% of its energy?
*Monday, March 3, 2014 at 8:30pm by john*

**physics**

A baseball catcher puts on an exhibition by catching a .150-kg ball dropped from a helicopter at a height of 100m above the catcher. If the catcher "gives" with the ball for a distance of .750m while catching it, what avg. force is exerted on the mitt by the ball? (g = 9.8 m/s...
*Thursday, October 30, 2008 at 7:37pm by mc*

**physics**

A ball of mass 0.120 kg is dropped from rest from a height of 1.25 m. It rebounds from the floor to reach a height of 0.600 m. What impulse was given to the ball by the floor?
*Monday, July 7, 2008 at 5:14pm by Elisa*

**physics**

A ball of mass 0.120 kg is dropped from rest from a height of 1.25 m. It rebounds from the floor to reach a height of 0.600 m. What impulse was given to the ball by the floor?
*Friday, October 14, 2011 at 5:42pm by Anonymous*

**physics**

a ball is dropped from height 10 m. it rebounds to a height of 5m.the ball was in contact with the floor for 0.01s what was its acceleration during contact?
*Monday, September 12, 2011 at 8:25am by patel*

**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 the ball in the air...
*Sunday, November 11, 2012 at 12:29am by H*

**science **

A ball having a mass of 0.20 kilograms is placed at a height of 3.25 meters. If it is dropped from this height, what will be the kinetic energy of the ball when it reaches 1.5 meters above the ground?
*Thursday, February 21, 2013 at 2:26pm by kavita *

**HS Physics**

Please help...I know the direction is up, but I can't figure out the magnitude, except that its label is kg · m/s, I think. A 0.400-kg ball is dropped from rest at a point 1.80 m above the floor. The ball rebounds straight upward to a height of 0.730 m. What are the magnitude ...
*Friday, October 15, 2010 at 6:22pm by Tzana*

**physics**

A golf ball is dropped from rest from a height of 8.20 m. It hits the pavement, then bounces back up, rising just 5.40 m before falling back down again. A boy then catches the ball when it is 1.40 m above the pavement. Ignoring air resistance, calculate the total amount of ...
*Saturday, September 8, 2012 at 12:38am by tom*

**physics**

A golf ball is dropped from rest from a height of 8.20 m. It hits the pavement, then bounces back up, rising just 5.40 m before falling back down again. A boy then catches the ball when it is 1.40 m above the pavement. Ignoring air resistance, calculate the total amount of ...
*Saturday, September 8, 2012 at 7:18pm by andy*

**Physics 1 (college)**

Chap. 7, #36. (II) A ball is dropped from a height of 1.50 m and rebounds to a height of 1.20 m. Approximately how many rebounds will the ball make before losing 90% of its energy?
*Monday, August 8, 2011 at 11:52am by Anonymous*

**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.
*Thursday, December 27, 2012 at 8:25am by anitha*

**Physics**

A ball is dropped from rest from 10 m above ground. The speed of the ball in the middle of trip to ground is close to Answer 14 m/s 10 m/s can't be determined because mass is not given 100 m/s
*Wednesday, February 13, 2013 at 11:42pm by Del*

**Precalculus**

A ball is dropped from a cliff that is 224 feet high. The distance S (in feet) that it falls in t seconds is given by the formula S=16t^2. How many seconds (to tenths) will it take for the ball to hit the ground?
*Friday, September 13, 2013 at 7:55pm by Jose*

**calculus**

A light is attached to the wall of a building 64 feet above the ground. A ball is dropped from the same height, but 20 feet away from the side of the building. The height y of the ball at time t is given by y(t) = 64 − 16t 2 . How fast is the shadow of the ball moving ...
*Monday, February 27, 2012 at 12:26pm by anonymous*

**Math (logic and problem solving)**

a rubber ball is dropped froma building that is 16 meters high. Each time the ball bounces, it bounces up half as high as the previous bounce. It is caught by Romer, the wonder dog, when it bounces 1 meter high. How many meters did the ball travel before it was caught?
*Sunday, October 30, 2011 at 10:30pm by sally*

**Physical Science**

If a hot iron ball is dropped into 200.0 gram of cooler waterthe water temperature increases by 2.0 celsius and the temperature of the ball decreases by 18.6 celsius. What is the mass?
*Wednesday, February 22, 2012 at 8:39pm by Anonymous*

**math**

A rubber ball is dropped from a height of 729 feet, and at each bounce it rebounds one-third of the height from which it last fell. How far has the ball travelled by the time it strikes the ground for the 5th time?
*Friday, November 29, 2013 at 10:46pm by Jasen*

**Physics**

A baseball catcher puts on an exhibition by catching a 0.15-kg ball dropped from a helicopter at a height of 101 m. What is the speed of the ball just before it hits the catcher's glove 1.0 m above the ground? (g = 9.8 m/s2 and ignore air resistance)
*Saturday, November 27, 2010 at 1:25pm by Matthew *

**Chemistry**

A ball is dropped from 27.0 ft above the ground. Using energy considerations only, what is the velocity of the ball just as it hits the ground? If the ball is thrown back up to a ledge 15 m above the ground, what would be the velocity just as it reaches the ledge?
*Friday, October 24, 2008 at 4:44pm by Jessica*

**Physics**

A ball is dropped from 27.0 ft above the ground. Using energy considerations only, what is the velocity of the ball just as it hits the ground? If the ball is thrown back up to a ledge 15 m above the ground, what would be the velocity just as it reaches the ledge?
*Friday, October 24, 2008 at 4:44pm by Jessica*

**Physics**

A ball is dropped from 27.0 ft above the ground. (a) Using energy considerations only, what is the velocity of the ball just prior to it hitting the ground? (b) If the ball is thrown back up to a ledge 15 m above the ground, what would be the velocity just as it reaches the ...
*Monday, February 27, 2012 at 5:55pm by Hannah *

**Physics 1**

A 0.620 kg basketball is dropped out of a window that is 6.40 m above the ground. The ball is caught by a person whose hands are 1.61 m above the ground. How much work is done on the ball by its weight?
*Wednesday, May 5, 2010 at 5:52pm by Fallon*

**physics**

A 0.620 kg basketball is dropped out of a window that is 6.40 m above the ground. The ball is caught by a person whose hands are 1.61 m above the ground. How much work is done on the ball by its weight?
*Tuesday, May 11, 2010 at 3:23pm by Fallon*

**physics**

A 0.579 kg basketball is dropped out of a window that is 6.22 m above the ground. The ball is caught by a person whose hands are 1.31 m above the ground. How much work is done on the ball by its weight?
*Sunday, January 22, 2012 at 8:33pm by Jen*

**physics**

A 0.579 kg basketball is dropped out of a window that is 6.22 m above the ground. The ball is caught by a person whose hands are 1.31 m above the ground. How much work is done on the ball by its weight?
*Wednesday, January 25, 2012 at 10:07pm by Sam*

**Math **

The height(h) of an object that has been dropped or thrown in the air is given by: h(t)=-4.9t^2+vt+h t=time in seconds(s) v=initial velocity in meters per second (m/s) h=initial height in meters(m) A ball is thrown vertically upwardd from the top of the Leaning Tower of Pisa (...
*Wednesday, April 4, 2012 at 4:24pm by NeedHelp*

**physics**

a rubber ball is dropped from a height of 5m. After the 5th bounce, the ball only comes back up to 0.76m in height/ Find the percentage loss of kinetic energy for each individual bounce.
*Thursday, March 12, 2009 at 11:06pm by Sam*

**physic**

A rubber ball dropped from a height of exactly 6 ft bounces several times on the floor, loosing 10% of its kinetic energy each bounce. After how many bounces will the ball subsequently not rise above 3 ft
*Wednesday, March 12, 2014 at 9:47am by muhammad fahad rafi*

**Physics**

A ball is thrown upward from the ground with an initial speed of 21.5 m/s; at the same instant, a ball is dropped from rest from a building 17 m high. After how long will the balls be at the same height? The acceleration of gravity is 9.81 m/s2. Answer in units of s.
*Tuesday, October 5, 2010 at 8:38pm by Anonymous*

**math**

i am having difficulties figuring this out.... a ball has dropped from a height of 15m and bounces 60% of the previous height. the total distance ball travels after the 9th bounce is... i got this equation done but i do not know how to calculate this to find the answer 15(0.6^...
*Monday, January 24, 2011 at 4:11pm by jackie*

**Physics**

How much kinetic energy does a 1 kg ball have if it has a velocity of 10 m/s? a. 100 J. b. 50 J. c. 10 J. d. 5 J. A ping pong ball and a golf ball move with the same kinetic energy. Which is moving fastest? (golf balls are heavier than ping pong balls). a. The ping pong ball ...
*Wednesday, October 19, 2011 at 6:59pm by Trinh*

**physics**

EXPLAIN A rubber ball (mass 0.30 kg) is dropped from a height of 1.2 m onto the floor. Just after bouncing from the floor, the ball has a speed of 3.6 m/s. (a) What is the magnitude and direction of the impulse imparted by the floor to the ball? so to find v1=square root of ...
*Monday, October 4, 2010 at 2:20pm by Frankie *

**physics**

A 13.0 {\rm g} plastic ball is dropped from a height of 2.80 {\rm m} and is moving at 3.20 {\rm m/s} just before it hits the floor. How much mechanical energy was lost during the ball's fall? delta E mech = ____ J
*Wednesday, March 23, 2011 at 9:08am by nancy*

**Physics**

A rubber ball dropped from a height of exactly 5 ft bounces (hits the floor) several times, losing 10% of its kinetic energy each bounce. After how many bounces will the ball subsequently not rise above 2 ft?
*Sunday, October 2, 2011 at 2:51pm by Kyle*

**physics**

A tennis ball of mass 100g is dropped from a height of 40m.It hits the ground and bounces back to a height of 30m after an impact of 0,01s.Ignore the air resistance .what was the velocity of the ball when it hit the ground ?
*Sunday, February 5, 2012 at 9:04am by kulani*

**science**

Science Experiment Determine a mathematical modelwhich describes the height of a ball in terms of th number of bounces after it has been droped from a given height. If a ball that bounces like a tenniis ball, is dropped from a given height, then it will bounce to a height less...
*Wednesday, October 21, 2009 at 4:52pm by Nicholas*

**physics**

A ball bearing is dropped from rest at a point A. At the instant it passes a mark 4.5 m below A, another ball bearing is released from rest from a position 5.5 m below A. 1) At what time after its release will the second ball bearing be overtaken by the first? 2) How far does ...
*Tuesday, June 7, 2011 at 12:00am by tank*

**physics**

A ball is thrown horizontally at 10.0 m/s from the top of a hill 50.0 m high. How far from the base of the hill would the ball hit the ground? I don't understand the following explained by Quittich (sp)? "Since there is no vertical component, the time to hit the ground is the ...
*Wednesday, April 2, 2008 at 5:46pm by Jon*

**math**

Suppose that a ball has a rebound percentage of 75 and the ball is dropped from a height of 5ft onto the concrete below. Make a table of the data. Write a recursive rule for the data. Write a closed-form function rule for the data. What would the height of the 5th bounce of ...
*Friday, March 1, 2013 at 8:25pm by Lola*

**Physics**

A ball is thrown straight up from the ground with an initial velocity of 30.4 m/s; at the same instant, a ball is dropped from the roof of a building 21.1 m high. After how long will the balls be at the same height? The acceleration of gravity is 10 m/s2. Answer in units of s
*Saturday, January 28, 2012 at 11:46pm by Kaleigh*

**Physics**

A ball dropped from rest on to horizontal ground 20m between rebounds with 3/4 of the velocity with which it hits the ground find time that elapses between the first and second in part of the ball with the ground
*Sunday, October 2, 2011 at 6:05pm by Anonymous*

**physics**

a tennis ball is dropped from 1.30 meters above the ground. it rebounds to a height of 1.00 meters. How do I find with what velocity does the ball hit the ground. With what velocity does it leave the ground, and if the tennis ball were in contact with the ground for 0.01 ...
*Wednesday, October 14, 2009 at 1:56am by Scott*

**physics**

A golf ball threw by a friend from a window of her apartment collides with a rock that you throw at the same moment at x=44.07m and y=13.63 m, and t=2.56 s. If the ball was dropped from a height of h=45.78 m, determine the initial velocity of the rock(write de x- and y- ...
*Tuesday, February 28, 2012 at 5:14am by abad*

**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?
*Wednesday, January 25, 2012 at 1:20am by Ed*

**Phisics**

A ball is dropped from the initial height h1 above the concrete floor and rebounds to a height of equal to 67% of the initial height h1. What is the ratio of the speed of the ball right after the bounce to the speed of the ball just before the bounce? This ratio is called ...
*Thursday, October 6, 2011 at 6:04pm by Logan*

**physics**

A ball is dropped from the initial height h1 above the concrete floor and rebounds to a height of equal to 60% of the initial height h1. What is the ratio of the speed of the ball right after the bounce to the speed of the ball just before the bounce? This ratio is called ...
*Wednesday, October 19, 2011 at 10:59am by Anonymous*

**physics**

A 116.0 g ball is dropped from a height of 2.75 m, bounces on a hard floor, and rebounds to a height of 1.82 m. The impulse received from the floor is shown below. What maximum force does the floor exert on the ball if it is exerted for 7.00 ms?
*Sunday, October 18, 2009 at 1:13pm by Anonymous*

**science**

If we drilled a hole straight through the earth, and dropped a golf ball down the hole, starting initially at rest, how fast would the ball be traveling when it reached the center of the earth. The earth’s radius is 6378 km.
*Thursday, February 6, 2014 at 8:28pm by kristi*

**Science**

A ball dropped from a height of 125 m takes 5 s to hit the ground and is traveling at the rate of 50 m/s when it hits. After 3 seconds, the ball travels at a rate of ___? After 4 seconds?
*Tuesday, November 30, 2010 at 11:08pm by Malou*

**Chemistry**

drop the crystal in each tube. If it crystallizes, you dropped it in C if it is unchanged, you dropped it in B if it dissolves, you dropped it in A
*Sunday, May 5, 2013 at 10:28am by bobpursley*

**physics 111**

A ball of mass 0.120 kg is dropped from rest from a height of 1.25 m. It rebounds from the floor to reach a height of 0.600 m. What impulse was given to the ball by the floor? answer in kg·m/s
*Wednesday, October 27, 2010 at 2:00pm by Blake *

**physics**

A(n) 96.1 g ball is dropped from a height of 59.1 cm above a spring of negligible mass.The ball compresses the spring to a maximum displacement of 4.75403 cm. The acceleration of gravity is 9.8 m/s^2. Calculate the spring force constant k. Answer in units of N/
*Tuesday, March 19, 2013 at 8:05am by Anonymous*

**Physics**

A ping pong ball and a golf ball move with the same kinetic energy. Which is moving fastest? (golf balls are heavier than ping pong balls). a. The ping pong ball is moving faster than the golf ball. b. The ping pong ball is moving slower than the golf ball. c. The ping pong ...
*Wednesday, October 19, 2011 at 6:59pm by Trinh*

**Physical Science**

Three balls (see below) are dropped simultaneously from the 40th floor of a tall building into the air below. A) In what order will they hit the ground, or will they arrive at the same time? B) Provide an explanation for your answer above. Ball A (softball size; wt= 50 g) Ball...
*Sunday, January 29, 2012 at 9:35pm by Aubree*

**Physics**

A 3 kg ball is dropped from the top of a cliff. At the same time, a 9 kg ball is fired straight down from the top of the cliff. Ignoring air resistance, what can we say about their accelerations after being released?
*Thursday, November 4, 2010 at 3:03pm by Zaphod*

**physics**

To keep homerun records and distances consistent from year to year, organized baseball randomly checks the coefficient of restitution between new baseball and wooden surface similar to that of of an average bat. Suppose you are in charge of making sure that no "juiced" ...
*Thursday, October 29, 2009 at 2:11am by Ryan*

**math**

A ball dropped 16 feet. The height of each bounce of the ball is 8 feet, 4 feet, 2 feet and so on. How high will the sixth bounce be show all of your work
*Tuesday, February 12, 2013 at 7:55pm by lee*

**physics**

A(n) 96.1 g ball is dropped from a height of59.1 cm above a spring of negligible mass.The ball compresses the spring to a maximum displacement of 4.75403 cm.The acceleration of gravity is 9.8m/s^2. Calculate the spring force constant k. Answer in units of N/m
*Monday, March 18, 2013 at 5:14am by Anonymous*

**math**

1.A ball is dropped from a height of 2.0, to a floor. After each bounce, the ball rises to 63% of its previous height What is the total vertical distance the ball has travelled after 5 bounces? 2.An oil produces 25000 barrels of oil durign its first month of production. ...
*Sunday, November 2, 2008 at 8:54pm by Steph*

**Physics**

A ball is dropped from the top of a 49.0 -high cliff. At the same time, a carefully aimed stone is thrown straight up from the bottom of the cliff with a speed of 20.0 . The stone and ball collide part way up.
*Sunday, October 7, 2012 at 2:02am by Yan*

**physics**

A 0.10 kilogram ball dropped vertically from a height of 1.0 meter above the floor bounces back to a height of 0.80 meter. The mechanical energy lost by the ball as it bounces is aprox. a. 0.080 J b. 0.20 J c. 0.30 J d. 0.78 J
*Monday, January 28, 2013 at 2:45pm by N*

**Algebra II**

Help me with this, please... A ball is dropped vertically from a height of 80 meters. After each bounce, the ball reaches a maximum height equal to 60 percent of maximum height of the previous bounce. a. Write the first three terms of the sequence. Explain how you know what ...
*Thursday, April 10, 2014 at 1:02pm by Me and I*

**physics**

a superball of mass .125 kg is dropped onto a concrete floor from a height of 1m it bounces back at a height of .9m. What is the net force acting on the ball before and after its released? Work done by the net force while the ball is falling until just before it hits the floor...
*Saturday, October 1, 2011 at 12:24am by kate*

**physics**

A 200 gram ball gets dropped from a roof at 15 meters high. A boy on the ground catches it. If 10 percent is translated to internal energy, then what was the increase of internal energy? Is it safe to be playing ball from the roof top?
*Tuesday, February 26, 2013 at 10:53pm by Anonymous*

**Math**

The height(H) of an object that has been dropped or thrown in the air is given by: H(t)=-4.9t^2+vt+h t=time in seconds(s) v=initial velocity in meters per second (m/s) h=initial height in meters(m) H=height h=initial height I didn't make this clear on the last post sorry. A ...
*Wednesday, April 4, 2012 at 5:58pm by Anonymous*

**science**

A ball having a weight of 1.5 N is dropped from a height of 4 meters
*Friday, December 3, 2010 at 4:41pm by Anonymous*

**College Algebra**

Alfred has just developed a new super ball and you have been asked to test its rebound capabilities. From your experiment you have found if you drop the ball from a height of 250 centimeters the first bounce average is 180 cm. rebound ratio = ? Using this rebound ratio, ...
*Wednesday, February 27, 2013 at 8:59am by Leigh*

**Math 2020 logic geo #2..**

thanks for the help with the first problem this is the last problem I have a question on... A superball rebounds half the height it drops. The ball is dropped from a height of 176 feet. How far off the ground is the ball when it has traveled a total of 500 feet?
*Monday, September 1, 2008 at 5:21pm by Deb*

**physics**

An object is thrown straight up. At the same instant that the object reaches its maximum height, a second object is dropped from this maximum height. Which object hits the ground first and why? Also, a ball is thrown straight up. If the ball's initial velocity is considered ...
*Saturday, September 13, 2008 at 9:45pm by meg*

**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 distance of the ...
*Thursday, November 9, 2006 at 9:03am by keneth*

**Physics**

A 3 Kg lead ball is dropped into a 3 L insulated pail of water initially at 20.0 degrees C. If the final temperature of the water-lead combination is 25 degress C, what was the initial temperature of the lead ball?
*Saturday, March 19, 2011 at 5:24pm by Kelsey*

**Physics**

A 7 kilogram bowling ball is dropped from a fourth story window. If each story is 3 meters high, use energy conservation (not the equations of motion) to find the ball's velocity when it strikes the ground. Ignore air resistance. 1/2 m v^2= mgh v= sqrt (2g*(3+.5)) V=sqrt(2)(9....
*Sunday, February 26, 2012 at 9:07pm by TRACY*

**physics**

A 7 kilogram bowling ball is dropped from a fourth story window. If each story is 3 meters high, use energy conservation (not the equations of motion) to find the ball's velocity when it strikes the ground. Ignore air resistance. 1/2 m v^2= mgh v= sqrt (2g*(3+.5)) V=sqrt(2)(9....
*Monday, February 27, 2012 at 10:03pm by TRACY*

**PHYSICS**

A 7 kilogram bowling ball is dropped from a fourth story window. If each story is 3 meters high, use energy conservation (not the equations of motion) to find the ball's velocity when it strikes the ground. Ignore air resistance. 1/2 m v^2= mgh v= sqrt (2g*(3+.5)) V=sqrt(2)(9....
*Tuesday, February 28, 2012 at 9:14pm by TRACY*

**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 my answer? Sn= a(r^n...
*Monday, January 5, 2009 at 9:17pm by Mae*

**maths lit**

a ball is dropped from a height of 2r1/3 meters. It bounces to 3/4 of the height from which it fell at each boune. A) determine the height the ball reaches after one bounce. B) how many bounces does it take to bounce less than 1 meter high??
*Thursday, January 31, 2013 at 9:40am by senzo*

**Physics 2**

A 0.564-kg basketball is dropped out of a window that is 5.85 m above the ground. The ball is caught by a person whose hands are 1.89 m above the ground. (a) How much work is done on the ball by its weight? What is the gravitational potential energy of the basketball, relative...
*Thursday, February 24, 2011 at 10:44pm by Tiffany*

**physics**

A 0.582-kg basketball is dropped out of a window that is 5.98 m above the ground. The ball is caught by a person whose hands are 1.58 m above the ground. (a) How much work is done on the ball by its weight? What is the gravitational potential energy of the basketball, relative...
*Monday, February 28, 2011 at 12:31pm by heather*

**physics**

A 0.582-kg basketball is dropped out of a window that is 5.98 m above the ground. The ball is caught by a person whose hands are 1.58 m above the ground. (a) How much work is done on the ball by its weight? What is the gravitational potential energy of the basketball, relative...
*Monday, February 28, 2011 at 12:31pm by heather*

**physics**

A 0.662-kg basketball is dropped out of a window that is 6.32 m above the ground. The ball is caught by a person whose hands are 1.82 m above the ground. (a) How much work is done on the ball by its weight? What is the gravitational potential energy of the basketball, relative...
*Monday, July 8, 2013 at 7:50pm by justin*

**physics**

A Superball is dropped from a height of 2.4 and rebounds off the floor to a height of 1.9 . Part A If the ball is in contact with the floor for 0.70 , determine the direction of the ball’s average acceleration due to the floor. If the ball is in contact with the floor for 0.70...
*Saturday, September 29, 2012 at 8:28pm by sammy*

**Gen physics**

A 0.662-kg basketball is dropped out of a window that is 6.32 m above the ground. The ball is caught by a person whose hands are 1.82 m above the ground. (a) How much work is done on the ball by its weight? What is the gravitational potential energy of the basketball, ...
*Monday, July 22, 2013 at 6:03pm by ODU*

**integrated algebra **

What is the rebound height of a ball dropped from 275 cm
*Wednesday, March 6, 2013 at 6:21pm by cayla*

**Algebra 2**

A ball is dropped from 400 ft what is the height of the ball on the 6th bounce? 1 bounce =280 ft 2 bounce= 196 ft 3 bounce = 137.2 How do I figure this out?
*Thursday, February 6, 2014 at 11:56am by Ana*

**calculus**

A ball is dropped from the top of a building. The height, , of the ball above the ground (in feet) is given as a function of time, , (in seconds) by y = 1640 - 16t^2 y'= -32t When does the ball hit the ground, and how fast is it going at that time? Give your answer in feet per...
*Sunday, November 14, 2010 at 9:23pm by Ashley*

**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, makes an elastic ...
*Saturday, September 8, 2012 at 10:51pm by A*

**math**

You can find the distance d an object falls in feet for time t in seconds using the formula d= 16t^2. Suppose a ball is dropped out of a window of a tall building. How far will the ball in 3 seconds? a 144 ft b 96 ft c 48 ft d 16 ft plz explain how to do this? thanks !!!
*Friday, March 20, 2009 at 8:19pm by Anonymous*

**SCIENCE; Physics**

A ball is dropped from a cliff amd has an acceleration of 9.8 meters per second squared. How long will it take the ball to reach a speed of 24.5 meters per second squared (m/s^2) ?
*Wednesday, September 28, 2011 at 4:08pm by Adria*

**Calculus**

A ball is dropped from the top of a building. The height, , of the ball above the ground (in feet) is given as a function of time, , (in seconds) by y = 1640 - 16t^2 y'= -32t When does the ball hit the ground, and how fast is it going at that time? Give your answer in feet ...
*Sunday, November 14, 2010 at 10:46pm by Ashley*

**math**

i totally dropped the ball in this one...i should have definitely know to find x!!!
*Monday, November 1, 2010 at 10:11pm by Lynne*

**physics**

A ball is dropped from the roof of a building. How fast is it moving after 4.6 seconds?
*Tuesday, September 25, 2012 at 8:18pm by lana*

**Science**

A golf ball and a ping-pong ball are dropped in a vacuum chamber. When they have fallen halfway down, they have the same... A.speed B.potential energy C.kinetic energy D.Rest Energy my thought is that its c, kinetic energy...but i'm not 100% sure
*Tuesday, January 23, 2007 at 6:32pm by Tammy*

**physics**

A steel ball is dropped from a diving platform (with an initial velocity of zero). Use the approximate value of g = 10 m/s2. (a) Through what distance does the ball fall in the first 1.5 seconds of its flight? (b) How far does it fall in the first 4 seconds of its flight?
*Thursday, January 20, 2011 at 8:43pm by Ashley*

**physics**

To keep homerun records and distances consistent from year to year, organized baseball randomly checks the coefficient of restitution between new baseball and wooden surface similar to that of of an average bat. Suppose you are in charge of making sure that no "juiced" ...
*Thursday, October 29, 2009 at 1:47pm by Ryan*

**6th grade**

each time a ball bounces it returns to a height 2/3 the hight of the previous bounce. after the third bounce, the ball returns to a hight of 4ft. from what height was it dropped
*Thursday, November 18, 2010 at 9:29pm by rebecca*

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