Friday

December 19, 2014

December 19, 2014

Number of results: 46,686

**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?
*July 7, 2008 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?
*October 14, 2011 by Anonymous*

**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
*October 27, 2010 by Blake *

**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?
*August 8, 2011 by Anonymous*

**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?
*March 3, 2014 by john*

**momemtum ?**

A ball of mass 0.150 kg is dropped from rest to a height of 0.125 m. It rebounds from the floor to reach a height of 0.960m. What impulse was given by the floor? please help/explain. Thanks!
*June 16, 2010 by jake*

**math**

A basketball is dropped from a height and it rebounds. Each time the basketball rebounds to a height of 200 cenitmeters. What height will the ball bounce on the third rebounds?
*February 28, 2012 by Sydney*

**physics**

1. A centrifuge in a medical laboratory rotates at an angular speed of 3650 rev/min. When switched off, it rotates through 50.0 revolutions before coming to rest. Find the constant angular acceleration of the centrifuge. 2. A ball of mass 0.120 kg is dropped from rest from a ...
*July 6, 2008 by Elisa*

**college physics**

A small ball of mass m is aligned above a larger ball of mass M = 0.79 kg (with a slight separation), and the two are dropped simultaneously from height h = 2.0 m. (Assume the radius of each ball is negligible relative to h). (a) If the larger ball rebounds elastically from ...
*November 12, 2009 by Steve*

**math **

A tennis ball is dropped from a height of 7 ft. If the ball rebounds 2/3 of its height on each bounce, how far will the ball travel before coming to rest? (Find the total distance that the ball will travel before it stops bouncing.) i need help i don't know which formula to ...
*September 29, 2014 by gisela*

**Math **

a ball rebounds 1/2 of the height from which it is dropped. The ball is dropped from a height of 136 feet and keeps on bouncing. How far will it traveled when it strikes the ground the third time?
*August 29, 2010 by Karen*

**Math**

A ball rebounds the ground to a height of 72 cm, and each time it rebounds to two thirds of the height. Estimate the total distance the ball travels before it comes to rest
*November 22, 2014 by Brian*

**physics**

A rubber ball of mass 18.0 g is dropped from a height of 1.75 m onto a floor. The velocity of the ball is reversed by the collision with the floor, and the ball rebounds to a height of 1.55 m. What impulse was applied to the ball during the collision?
*October 16, 2011 by Kellie*

**physics**

A rubber ball of mass 19.5 g is dropped from a height of 1.85 m onto a floor. The velocity of the ball is reversed by the collision with the floor, and the ball rebounds to a height of 1.55 m. What impulse was applied to the ball during the collision?
*February 24, 2012 by Tyler*

**Physics**

A rubber ball of mass 41.5 g is dropped from a height of 1.75 m onto a floor. The velocity of the ball is reversed by the collision with the floor, and the ball rebounds to a height of 1.55 m. What impulse was applied to the ball during the collision?
*February 24, 2012 by Anonymous*

**physics**

A rubber ball of mass 43.5 g is dropped from a height of 2.05 m onto a floor. The velocity of the ball is reversed by the collision with the floor, and the ball rebounds to a height of 1.55 m. What impulse was applied to the ball during the collision?
*October 14, 2013 by Anonymous*

**Algebra**

A rubber ball rebounds 3/5 of the height from which it falls. If it is initially dropped from a height of 30 ft. What total vertical distance does it travel before coming to rest?
*January 28, 2012 by PDF*

**math**

a ball rebounds one half of the height from which it was dropped. The ball is dropped from a height of 160 feet and keeps bouncing. what is the total vertical distance the ball will travel from the moment it is droppedto the moment it hits the floor for the fifth time?
*July 9, 2009 by laly*

**Science**

A ball of mass 200 g is dropped from a height 3 m above the ground onto a hard floor, and rebounds to a height of 2.2 m. If the ball is in contact with the floor for 0.002 s calculate the average force exerted by the floor on the ball
*March 7, 2014 by Thobiswa*

**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?
*March 29, 2008 by JIM*

**Physics**

A ball of mass 0.15kg is dropped from rest at a height of 1.25m. it rebounds from the floor to reach a height of 0.960n. what impulse is given to the ball from the floor? i dont have a clue where to start. i know impulse is constant force x change in time or time elapsed, but ...
*October 21, 2007 by natali*

**Physics**

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 and direction of the impulse of the net force applied to the ball during the collision with the floor?
*October 14, 2010 by Sarah*

**Physics**

A rubber ball with a mass of 0.130 kg is dropped from rest. From what height was the ball dropped, if the magnitude of the ball's momentum is 0.710 kg · m/s just before it lands on the ground?
*November 5, 2014 by Nicco*

**Physics**

A basketball of mass 0.70 kg is dropped from rest from a height of 1.22 m. It rebounds to a height of 0.64 m. How much mechanical energy was lost during the collision with the floor? A basketball player dribbles the ball from a height of 1.22 m by exerting a constant downward ...
*November 27, 2012 by Physics*

**Physics**

A 0.350-kg ball is dropped from rest at a point 1.10 m above the floor. The ball rebounds straight upward to a height of 0.420 m. Taking the negative direction to be downward, what is the impulse of the net force applied to the ball during the collision with the floor?
*January 3, 2012 by Robert*

**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.
*December 6, 2010 by Mike*

**physics**

a .140 kg baseball is dropped from rest from a height of 2.2m above the ground. it rebounds to a height of 1.6 m. what change in the balls momentum occurs when the ball hits the ground?
*February 22, 2011 by vicki *

**physics**

a .140 kg baseball is dropped from rest from a height of 2.2m above the ground. it rebounds to a height of 1.6 m. what change in the balls momentum occurs when the ball hits the ground
*February 23, 2011 by vicki *

**math**

A ball rebounds to one quarter from which it was dropped. approximate the total vertical distance the ball after being dropped from 3ft above the ground ,until it comes to rest
*April 15, 2014 by anna*

**uniben**

A rubber ball is dropped from a height of 10meters,suppose it rebounds one-half the distance after each fall.find the total distance the ball travels before coming to rest.
*April 29, 2012 by wilfred*

**physics**

A ball of mass 0.1 kg is dropped from a height of 2 m onto a hard surface. If rebounds to a height of 1.5 m and it is in contact with the surface for 0.05s. Calculate the: (a) speed with which it strikes the surface. (b) speed with which it leaves the surface. (c) change in ...
*March 15, 2014 by waslat *

**physics**

a ball mass 800g is dropped from height of 5m and rebounds to a hight of 3.8m the air resistance is negligible. calculate a. the kinetic energy of the ball just before impact b. the initial rebound speed of the ball c. the energy transferred to the ground during impact
*December 13, 2010 by lewis*

**math**

the height that a ball bounces varies directly as the height from which it is dropped. A ball dropped from a height of 20cm bounces 16cm a) Find the height of the bounce if the ball is dropped from a height of 280cm b) Find from waht height the ball was dropped if it bounces ...
*January 13, 2009 by lisa*

**Physics**

After falling from rest from a height of 27 m, a 0.53 kg ball rebounds upward, reaching a height of 17 m. If the contact between ball and ground lasted 1.6 ms, what average force was exerted on the ball?
*February 25, 2011 by Anonymous*

**Physics**

After falling from rest from a height of 30 m, a 0.49 kg ball rebounds upward, reaching a height of 20 m. If the contact between ball and ground lasted 2.5 ms, what average force was exerted on the ball?
*September 12, 2011 by LeVonte*

**Physics**

After falling from rest from a height of 35 m, a 0.49 kg ball rebounds upward, reaching a height of 25 m. If the contact between ball and ground lasted 1.7 ms, what average force was exerted on the ball?
*September 20, 2012 by Freedo*

**physics**

After falling from rest from a height of 30 m, a 0.48-kg ball rebounds upward, reaching a height of 20 m. If the contact between ball and ground lasted 1.8 ms, what average force was exerted on the ball?
*February 25, 2013 by adam*

**physics**

After falling from rest from a height of 26 m, a 0.49-kg ball rebounds upward, reaching a height of 16 m. If the contact between ball and ground lasted 1.8 ms, what average force was exerted on the ball?
*March 20, 2013 by matt*

**MATH **

a golf ball dropped onto a hard surface rebounds exactly 1/3 of the height from which it falls. how far will it rebound after hitting the surface for the third time if it initially dropped from a height of 18 feet
*February 3, 2011 by bob*

**college physics**

After falling from rest from a height of 34 m, a 0.47 kg ball rebounds upward, reaching a height of 24 m. If the contact between ball and ground lasted 1.8 ms, what average force was exerted on the ball?
*September 21, 2010 by halley*

**college physics**

After falling from rest from a height of 34 m, a 0.47 kg ball rebounds upward, reaching a height of 24 m. If the contact between ball and ground lasted 1.8 ms, what average force was exerted on the ball?
*September 21, 2010 by mary*

**physics**

After falling from rest at a height of 31.5 m, a 0.564 kg ball rebounds upward, reaching a height of 20.2 m. If the contact between ball and ground lasted 1.80 ms, what average force was exerted on the ball?
*February 12, 2014 by sam*

**physics**

a ball is dropped from a point heiht above the ground.on striking the ball it rebounds with a small speed as it strikes with the ground and would hence come up to same height from were it was dropped and motion remained infinetly?draw x-t gaphs?
*May 6, 2013 by lalita*

**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 ...
*October 15, 2010 by Tzana*

**Physics**

After a 0.200-kg rubber ball is dropped from a height of 1.95 m, it bounces off a concrete floor and rebounds to a height of 1.45 m. (a) Determine the magnitude and direction of the impulse delivered to the ball by the floor. (b) Estimate the time the ball is in contact with ...
*March 5, 2014 by Joe*

**Physics**

After a 0.200-kg rubber ball is dropped from a height of 1.95 m, it bounces off a concrete floor and rebounds to a height of 1.45 m. (a) Determine the magnitude and direction of the impulse delivered to the ball by the floor. (b) Estimate the time the ball is in contact with ...
*March 7, 2014 by Joe*

**Physics**

A ball is dropped from a height of 5.67 m. If the ball rebounds with a speed of 4.22 m/s, what is the coefficient of restitution? a. .40 b. .74 c. .56 d. 1.23 I've ruled d out because it is greater than 1.
*February 26, 2013 by Kaci*

**physics**

After falling from rest at a height of 29.2 m, a 0.488 kg ball rebounds upward, reaching a height of 20.3 m. If the contact between ball and ground lasted 1.68 ms, what average force was exerted on the ball? I'm so confused on where to start. tyvm
*September 22, 2009 by David *

**math**

how do i work out the following word problem. a particular ball retains half of its heght on each bounce when dropped from a height of 80 m. give the height of the ball on the fifth bounce after being dropped?(will the ball comes to rest?)
*May 19, 2012 by ladane*

**physics.... please help**

A ball is dropped from a height of 5.67 m. If the ball rebounds with a speed of 4.22 m/s, what is the coefficient of restitution? a. .40 b. .74 c. .56 d. 1.23 I've ruled d out because it is greater than 1.
*February 26, 2013 by Kaci*

**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?
*November 29, 2013 by Jasen*

**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?
*September 12, 2011 by patel*

**math**

a ball tossed to a height of 4 meters rebounds 40% of its previous height. the total distance travelled by the ball by the time it comes to rest is?
*March 10, 2013 by ross*

**algebra**

When a tennis ball is dropped, it rebounds to 70% of its initial height. If we drop a tennis ball from 10 ft, determine the total distance traveled by the ball after 10 bounces.
*February 10, 2013 by Jennah*

**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 ...
*October 6, 2011 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 ...
*October 19, 2011 by Anonymous*

**calculus II**

a ball is dropped from a height of 100 ft. Each time it hits the floor, it rebounds to 2/3 its previous height. Find the total distance traveled.
*July 12, 2009 by SDSU*

**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?
*October 18, 2009 by Anonymous*

**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 ...
*September 8, 2012 by A*

**Physics**

A 0.135 kg ball is dropped from rest. If the magnitude of the ball's momentum is 0.730 kg·m/s just before it lands on the ground, from what height was it dropped?
*April 22, 2010 by Physics*

**Physics**

A 0.135 kg ball is dropped from rest. If the magnitude of the ball's momentum is 0.730 kg·m/s just before it lands on the ground, from what height was it dropped?
*April 22, 2010 by Physics*

**physics**

A superball is dropped from rest from a height of 2.0m. It bounces repeatedly from the floor, as superballs are prone to do. After each bounce the ball dissipates some energy, so eventually it comes to rest. The following pattern is observed: After the 1st bounce, the ball ...
*January 31, 2014 by Chey*

**physics**

A superball is dropped from rest from a height of 2.0m. It bounces repeatedly from the floor, as superballs are prone to do. After each bounce the ball dissipates some energy, so eventually it comes to rest. The following pattern is observed: After the 1st bounce, the ball ...
*January 31, 2014 by Cheylynne*

**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?
*September 1, 2008 by Deb*

**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 dropped?
*December 9, 2011 by sim*

**math**

when a ball is dropped, it bounces back up 4/5 of the height from the height it was dropped.If the ball dropped from a height of 200cm, how high does it go after bouncing twice.
*February 9, 2013 by leanna*

**Physics**

Two balls are connected by a string that stretches over a massless, frictionless pulley. Ball 1 has a mass of 0.45 kg and is held 0.74 m above the ground. Ball 2 has a mass of 5.7 kg and is held 0.88 m above the ground. When the balls are released, ball 2 falls to the ground, ...
*December 21, 2008 by jason*

**physic**

Two balls are conneted by a string that stretches over a massless, frictionless pulley. Ball 1 has a mass of 0.81 kg and is held 0.5 m above the ground. Ball 2 has a mass of 6.3 kg and is held 0.28 m above the ground. When the balls are released, ball 2 falls to the ground, ...
*January 15, 2012 by Anonymous*

**math**

Two identical rubber balls are dropped from different heights. Ball 1 is dropped from a height of 156 feet, and ball 2 is dropped from a height of 202 feet. Write a function for the height of each ball. h1(t)=159+t h2(t)=202+t
*July 12, 2014 by pmh*

**physics**

a basketball of mass 0.5 kg is dropped from restfrom a height of 1.34m.it rebounds to a height of 0.6m. how much mechanicalenergy was lost during the collision with the floor?
*March 8, 2010 by emma*

**physics**

a rubber ball of mass 50g falls from a height of 10 cm and rebounds to a height of 50 cm .determine the change in the linear momentum and average force between the ball and the ground taking time of contact as 0.1 sec
*June 30, 2012 by meena*

**physics**

A tennis ball of 60g is dropped from a height of 2.0m,It rebounds but loses 25% of its kintic energy as thermal energy.Ignoring air resistance,calculate (1)the kinetic energy of the tennis ball when hits the ground. (2)the height reached on the ground
*April 6, 2011 by Physics,help.*

**Physics**

A ball, dropped from rest, cover 2/7 of the distant to the ground in the last 2 seconds of its fall. From what height was the ball dropped? What was the total time of the fall?
*October 11, 2009 by Robert C*

**PreCalc - Sequence**

A ball is dropped from a height of 20 ft and always rebounds 1/4 of the distance fallen. A. write a sequence for the first 3 rebound heights B. How high is the 6th rebound? C. Find the sum of all possible rebounds. I keep getting numbers that are too high. I don't think I have...
*July 27, 2011 by Joe*

**Pre-calculus **

a) A particular ball always rebounds 3/5 the distance it falls. If the ball is dropped from a height of 5 meters, how far will it travel before coming to a stop? Explain the reasoning. b) Prove that if a1, a2, a3, ... is a geometric sequence,then ln(a1), ln(a2), ln(a3)... is ...
*February 9, 2013 by John*

**Physics**

A superball with a mass of 71.2 g is dropped from a height of 2.5 m. It rebounds to a height of 2 m. What is the change in its linear momen- tum during the collision with the floor? The acceleration of gravity is 9.8 m/s2 . Answer in units of kg · m/s
*March 5, 2014 by Tod*

**physics**

two balls are dropped to the ground from different heights. one ball is dropped 2s after the other but they both strike the ground at the same time, 5s after the first is dropped. what is the difference in height from which they are dropped? from what height was the first ball...
*June 14, 2011 by pavatharani*

**algebra1 HELP PLEASE**

Two identical rubber balls are dropped from different heights. Ball 1 is dropped from a height of 100 feet, and ball 2 is dropped from a height of 210 feet. Write a function for the height of each ball. h1(t) = h2(t) = When does ball 1 reach the ground? Round to the nearest ...
*July 8, 2013 by lisa*

**Physics**

A billiard ball strikes and rebounds from the cushion of a pool table perpendicularly. The mass of the ball is 0.38 kg. The ball approaches the cushion with a velocity of +2.10 m/s and rebounds with a velocity of -2.00 m/s. The ball remains in contact with the cushion for a ...
*October 7, 2012 by Cheng*

**physics**

A billiard ball strikes and rebounds from the cushion of a pool table perpendicularly. The mass of the ball is 0.38 kg. The ball approaches the cushion with a velocity of +2.30 m/s and rebounds with a velocity of -1.90 m/s. The ball remains in contact with the cushion for a ...
*November 11, 2013 by bb*

**Physics - Momentum**

A ball of mass m makes a head-on elastic collision with a second ball (at rest) and rebounds with a speed equal to one-third its original speed. What is the mass of the second ball?
*December 10, 2009 by DJ*

**Physics**

A ball of mass m makes a head-on elastic collision with a second ball (at rest) and rebounds with a speed equal to one-fourth its original speed. What is the mass of the second ball?
*December 10, 2009 by Eric*

**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
*October 2, 2011 by Anonymous*

**physic PLEASE I REALLY NEED HELP WITH THIS PROBLEM**

Two identical rubber balls are dropped from different heights. Ball 1 is dropped from a height of 100 feet, and ball 2 is dropped from a height of 210 feet. Write a function for the height of each ball. h1(t) = h2(t) = When does ball 1 reach the ground? Round to the nearest ...
*July 8, 2013 by lisa*

**algeba 1 please I REALY NEED HELP THANK YOU :D**

Two identical rubber balls are dropped from different heights. Ball 1 is dropped from a height of 100 feet, and ball 2 is dropped from a height of 210 feet. Write a function for the height of each ball. h1(t) = h2(t) = When does ball 1 reach the ground? Round to the nearest ...
*July 8, 2013 by lisa*

**physics**

A small pumpkin of mass 2.22 kg is dropped from rest from a height of 2.87 m. The pumpkin rebounds from the ground to a height of 1.12 m. a. With what speed does the pumpkin hit the ground? b. With what speed does the pumpkin leave the ground? c. What impulse was given to the ...
*October 24, 2014 by David*

**algebra1 HELP PLEASE Thanks you!!**

Two identical rubber balls are dropped from different heights. Ball 1 is dropped from a height of 100 feet, and ball 2 is dropped from a height of 210 feet. Write a function for the height of each ball. h1(t) = h2(t) = When does ball 1 reach the ground? Round to the nearest ...
*July 8, 2013 by sandy *

**physics**

A tennis ball is dropped from 1.60 m above the ground. It rebounds to a height of 1.00 m (assume down to be negative) With what velocity does it leave the ground?
*October 21, 2011 by nolen*

**algebra1 HELP PLEASE Thanks you!!**

wo identical rubber balls are dropped from different heights. Ball 1 is dropped from a height of 100 feet, and ball 2 is dropped from a height of 210 feet. Write a function for the height of each ball. h1(t) = h2(t) = When does ball 1 reach the ground? Round to the nearest ...
*July 8, 2013 by lisa*

**physics**

A ball of mass 1.2kg and a volume of 35cm cubed is dropped from a height of 2m. Determine the height to which this ball will bounce.
*September 5, 2010 by Joe*

**Physics **

A ball is dropped from a height of 20m. When it bounces, it rebounds with a speed that is one half of the speed at which it hits the ground. How high does it bounce?
*March 12, 2013 by Kit*

**Physics **

A ball is dropped from a height of 20m. When it bounces, it rebounds with a speed that is one half of the speed at which it hits the ground. How high does it bounce?
*March 12, 2013 by Sam*

**physics**

A ball is dropped from a height of 20m and rebounds with a velocity which is 3/4 of the velocity with which it hit the ground. What is the time interval between the first and second bounces?
*March 28, 2010 by Edwin*

**physics**

A tennis ball of 60g is dropped from a height of 2.0m,It rebounds but loses 25% of its kintic energy as thermal energy.Ignoring air resistance,calculate
*April 6, 2011 by Physics,help.*

**Physics**

A ball of mass m makes a head-on elastic collison with a second ball (at rest) and rebounds in the opposite direction with a speed equal to 1/4 it's original speed. What is the mass of the second ball? I would really apprieciate it if ya'll would show steps. I have been ...
*November 9, 2012 by Henry*

**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.
*December 27, 2012 by anitha*

**calculus**

A ball has bounce coefficient 0 < r < 1 if when it is dropped from height h, it bounces back to a height of rh. Suppose that such a ball is dropped from an initial height a and subsequently bounces infinitely may times. Find the total up-and-down distance in all its ...
*July 18, 2010 by fred*

**physics**

A tennis ball is dropped from 1.24 m above the ground. It rebounds to a height of 1.05 m. With what velocity does it hit the ground? The acceleration of gravity is 9.8 m/s 2 . (Let down be negative.) Answer in units of m/s
*October 22, 2012 by Anonymous*

**physics**

a ball is dropped from a tower of height 5 m. it accelerates uniformly at 10m/s .if mass of the ball is 2 kg ,find the momentum transferred by a ball to the ground on striking.
*October 9, 2013 by TINA*

**Math**

Im just a little confused on how to answer this question. A ball bounced 64% of the height from which it was dropped. The bounce was 72 cm high. What is the height from which the ball was dropped. I think there has to be an algebraic equation of some sort, but I'm not sure ...
*May 15, 2011 by Erika*

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