Wednesday

July 30, 2014

July 30, 2014

Number of results: 12,363

**Physics**

1) A child on a playground swing makes a complete to-and-fro swing each 2 seconds. The period is: 0.5 Seconds 2 Seconds I think the answer is 2. Am I correct? 2) The period of a 440 Hertz sound wave is ___ seconds. 1/440 440 I think the answer is 440. Am I correct?
*December 18, 2009 by Hannah*

**Science**

1. A girl on a playground swing makes a complete to-and-fro swing each 2 seconds. The frequency of swing is 1. (0.5 hertz) 2. (1hertz) (ANSWER) 3. (2 hertz) And the period is (FROM THE QUESTION BEFORE) 1. (0.5 seconds) (ANSWER) 2. (1 second) 3. (2 seconds) 2. The period of a ...
*January 23, 2010 by Sam*

**Vibration and Waves**

1. A girl on a playground swing makes a complete to-and-fro swing each 2 seconds. The frequency of swing is 1. (0.5 hertz) 2. (1hertz) (ANSWER) 3. (2 hertz) And the period is (FROM THE QUESTION BEFORE) 1. (0.5 seconds) (ANSWER) 2. (1 second) 3. (2 seconds) 2. The period of a ...
*January 24, 2010 by Sam*

**physics**

A girl 36 kg occupies a seat of a swing that this subject by two chains 20 m in length each. If someone drops the girl from an 8 m position below the highest of the swing. What strength exercises it on the girl when she passes through the point lower?
*November 10, 2010 by paul*

**physics**

A girl 36 kg occupies a seat of a swing that this subject by two chains 20 m in length each. If someone drops the girl from an 8 m position below the highest of the swing. What strength exercises it on the girl when she passes through the point lower?
*November 10, 2010 by paul*

**physics**

A child swings on a playground swing. How many times does the child swing through the swing's equilibrium position during the course of 3 period(s) of motion
*February 22, 2012 by Kasey*

**Pre Calc**

simon goes to the playground to play on the swings. The length of each swing is 1.75m. What is the distance travelled on one swing, from max height to the next max height if the central angle of the swing is 1.4 rad?
*April 15, 2013 by Dano*

**physics**

Kelli weighs 392 N, and she is sitting on on a playground swing that hangs 0.4 m above the ground. Her mom pulls the swing back and releases it when the seat is 1.1 m above the ground. If Kelli moves through the lowest point at 1.5 m/s, how much work was done on the swing by ...
*April 23, 2013 by James*

**physics**

Kelli weighs 392 N, and she is sitting on on a playground swing that hangs 0.4 m above the ground. Her mom pulls the swing back and releases it when the seat is 1.1 m above the ground. If Kelli moves through the lowest point at 1.5 m/s, how much work was done on the swing by ...
*April 23, 2013 by James*

**blair**

Sitting motionless on a playground swing. The downward force is 500 n. How much force is there on each of the two swing chainsv
*April 27, 2011 by maria*

**Physics**

A 60 kg girl on a swing is pulled 1.5 meters back and then released. The girl oscillates at pi/3 radians per second. How far from equilibrium will the girl be in 4 seconds into the motion? How fast will she be moving at this location?
*March 18, 2014 by Sounders*

**Physics**

A baby turtle swings on a playground swing. If his turtle mom comes and sits with him, the period of the swing's oscillation will: a.Increase b.Decrease c.Stay the same
*November 3, 2012 by StressedStudent*

**Physics**

Betty weighs 427 N and she is sitting on a playground swing seat that hangs 0.22 m above the ground. Tom pulls the swing back and releases it when the seat is 0.88 m above the ground. The acceleration of gravity is 9.8 m/s2. Betty is moving 3.5967 m/s when the swing passes ...
*February 20, 2013 by josh*

**Physics HELP!**

A 650 N boy and a 490 N girl sit on a 150 N porch swing that is 1.70 m long. If the swing is supported by a chain at each end, what is the tension in each chain when the boy sits .75 m from one end and the girl .5 m from the other end?
*December 5, 2010 by Jennifer*

**Physics**

Betty weighs 449 N and she is sitting on a playground swing seat that hangs 0.55 m above the ground. Tom pulls the swing back and releases it when the seat is 0.76 m above the ground.The acceleration of gravity is 9.8 m/s^2. How fast is Betty moving when the swing passes ...
*March 18, 2013 by Anonymous*

**algebra**

Time to swing. The period T (time in seconds for one complete cycle) of a simple pendulum is related to the length L (in feet) of the pendulum by the formula 8T^2=n ^2 L. If a child is on a swing with a 10 foot chain, then how long does it take to complete one cycle of the ...
*July 15, 2010 by paul*

**math**

A pendulum swings through an angle of 14 degrees each second. If the pendulum is 17cm in length and the complete swing from right to left lasts 3 seconds, what area is covered by each complete swing?
*March 19, 2013 by Katelyn*

**Physics**

A 21-kg child swings on a playground swing 3.4 m long. What is the period of her motion? If her brother, who weighs twice as much as she does,rides on the swing instead, what is the period of the motion?
*December 11, 2009 by Nicole*

**Physics**

Betty weighs 427 N and she is sitting on a playground swing seat that hangs 0.22 m above the ground. Tom pulls the swing back and releases it when the seat is 0.88 m above the ground. The acceleration of gravity is 9.8 m/s2. How fast is Betty moving when the swing passes ...
*February 20, 2013 by brian*

**programming**

Application: Pendulum Clocks Pendulums used in clocks, such as grandfather clocks, keep fairly accurate time for the following reason: When the length of a pendulum is large compared with the maximum arc of its swing, the time to complete one swing is independent of both the ...
*October 4, 2012 by fatih*

**English**

On the playground, there are two fathers and three kids. There is a slide on the playground. On the slide a boy is sliding down upside down, and his father is catching the boy. The other father is holding a girl in her left hand. The other girl is on his back and the father is...
*November 4, 2013 by rfvv*

**Physics**

A 35kg child is swinging on a swing with length 2.8m to the bottom of the seat. At the highest point of the swing, the rope makes an angle of 42 degrees from vertical. Calculate the speed of the child at the bottom of the swing. Assume no thermal energy is created. Calculate ...
*April 5, 2013 by John*

**math**

The period T (time in seconds for one complete cycle) of a simple pendulum is related to the length L (in feet) of the pendulum by the formula 8T^2=Pi^2L. If a child is on a swing with a 10-foot chain, then how long does it take to complete one cycle of the swing?
*July 18, 2010 by R*

**physics**

While fishing, you get bored and start to swing a sinker weight around in a circle below you on a 0.24 m piece of fishing line. The weight makes a complete circle every 0.60 s. What is the angle that the fishing line makes with the vertical?
*November 18, 2011 by Danielle*

**Physics**

While fishing, you get bored and start to swing a sinker weight around in a circle below you on a 0.25-m piece of fishing line. The weight makes a complete circle every 0.50 sec. What is the angle that the fishing line makes with the vertical?
*October 29, 2009 by Sam Line*

**physics**

While fishing, you get bored and start to swing a sinker weight around in a circle below you on a 0.31- piece of fishing line. The weight makes a complete circle every 0.70 . What is the angle that the fishing line makes with the vertical? Express your answer using two ...
*November 7, 2012 by Kelly*

**physics**

a 1.00 kg pendulum bob is released from a height of .200m. its speed at the bottom of its swing is 1.95m/s on the first pass. how much energy is lost due to friction during one complete swing?
*February 6, 2013 by Anonymous*

**Algebra**

The period of time the pirate ship ride at a carnival takes to complete one cycle swinging to and fro is represented by the formula below for L feet long and T seconds. Find to the nearest hundredth of a second the period of time it takes the ride to swing one cycle if the ...
*May 20, 2011 by Amy*

**Math**

A school is fencing in a rectangular area for a playground. It plans to enclose the playground using fencing on three sides (One length is a wall) The school has budgeted enough money for 75 ft of fencing material and would like to make a playground with an area of 600 ft ...
*February 12, 2012 by Jane*

**English**

1. In the playground lay the dying soldiers. 2. In the playground he lay. 3. In the playground lay this. 4. In the playground this lay. (#1 and #2 are right? What about #3 and #4? Which one is grammatical, #3 or #4?)
*November 26, 2013 by rfvv*

**lgebra**

the time T in second for a pendicular of length L feet to make one swing is given by t =2pie square root L over 40 How long is the perpendicular if it makes 1 swing in 1.9 second use 3.14
*February 18, 2014 by beverly*

**physics3..help PLEASE!!**

At the local playground a child on a swing has a speed of 2.14 m/s when the swing is at its lowest point. (a) To what maximum vertical height does the child rise, assuming he sits still and "coasts"? Ignore air resistance. (b) To what maximum vertical height does the child ...
*October 8, 2008 by kelsey*

**Algebra**

The length of a rectangular playground exceeds twice its width by 25 meters, The perimeter of the playground is 650 meters. Find the demensions of the playground.
*October 30, 2012 by Chris*

**Music**

Isn't "In a Mellotone" an example of big band swing or small group swing? I thought it was big band swing but was told otherwise that it wasn't. Can anybody clarify. It is big band swing. Count Basie, Duke Ellington had this tune as mainstays. They represent Big Band Swing Jazz.
*December 2, 2006 by Sarah*

**math**

The period T (time in seconds for one completecycle) of a simple pendulum is related to the length L(in feet) of the pendulum by the formula8T^2=pi^2L. If achild is on a swing with a 10-foot chain, then how longdoes it take to complete one cycle of the swing?
*March 18, 2009 by Debbie*

**physics**

While fishing, you get bored and start to swing a sinker weight around in a circle below you on a 0.50 piece of fishing line. The weight makes a complete circle every 0.40 .
*November 13, 2012 by Anonymous*

**Math Algebra 2**

Mr. Mullett has designed a playground for his 4 kids. This playground is awesome. The playground equipment is top of the line, multiple slides, swings, climbing wall and the playground area also includes a trampoline. What he doesn’t have is a sidewalk around the playground ...
*September 3, 2012 by Curtis*

**geometry**

the area of the rectangular playground enclosure at South School is 500 square meters. The length of the playground is 5 meters longer than the width. Find the dimensions of the playground, in meters.
*September 12, 2010 by ni*

**physics**

if the angular speed of earth becomes 17times its present value what will be the 1.effect on a body on the equator of earth? it will be A. Heavier than present value B.lighter than present value C.weightless And also what is the reason? 2.a girl sitting on a swing stands up. ...
*March 1, 2013 by edward*

**physics**

if the angular speed of earth becomes 17times its present value what will be the 1.effect on a body on the equator of earth? it will be A. Heavier than present value B.lighter than present value C.weightless And also what is the reason? 2.a girl sitting on a swing stands up. ...
*March 1, 2013 by edward*

**math 5th**

The new playground at Middledale school will be enclosed by a fence. The playground will be rectangular and will have an area of 225 sq. yd. The number of yards on each side will be a whole number. What is the least amount of fencing that could be required to enclose the ...
*February 12, 2013 by sean*

**math **

Simran Gill speed walks around the school playground every evening. The playground is 80m long and 45m wide. a.) What is the perimater of the playground? b.) Suppose Simran took a longer walk. Suggest some ways he could do that.
*December 18, 2012 by ashley*

**PHYSICS - PLEASE HELP**

A 1.00 kg pendulum bob is released from a height of 0.200 m. Its speed at the bottom of its swing is 1.95 m/s on the first pass. How much energy is lost due to friction during one complete swing of the pendulum? I get Ep=mgh 0.2*9.8*1 =1.96 then i get Ek=1/2mv^2 1/2*1*1.95^2...
*March 20, 2013 by Manboob*

**physics**

A young girl is on a swing that completes 20.0 cycles in 25 seconds. What are its frequency and period?
*March 14, 2012 by ana loren*

**Algebra1**

The area of a playground is 221 yd2. The width of the playground is 4 yd longer than its length. Find the length and width of the playground. (Hint: Include correct units in your final answer.)
*May 2, 2010 by Anonymous*

**algebra 1**

Blue prints allow an area of 20,000 square feet for the playground. the width of the rectangular playground is 80 feet less than its length and its perimeter is 640 freet. what is the length of the playground?
*September 3, 2009 by casey*

**physics**

A bird perched on a swing the sits 8 cm below a bar has a mass of 52 g, and the base of the swing has a mass of 153 g. The swing and bird are originally at rest, and then the bird takes of horizontally at 2 m/s. How high will the base of the swing rise above its original level...
*March 20, 2007 by Mischa*

**College Physics**

Tarzan spies a 35kg chimpanzee in severe danger, so he swings to the rescue. He adjusts his strong, but very light, vine so that he will first come to rest 4.0 s after beginning his swing, at which time his vine makes a 12 degree angle with the vertical. (a) How long is Tarzan...
*October 26, 2007 by Jen*

**English**

1. The girl is aged 13. 2. The girl is 13. 3. The girl is 13 years old. 4. The girl is at the age of 13. 5. the girl is at age 13. (Are they all grammatical and the same? Is #1 correct?)
*October 7, 2010 by rfvv*

**Geometry**

A toddler’s playground has two slides on either side. The slide on the left is situated at a 45° angle to the ground and is 68 centimeters away from the base of the playground. The slide on the right is positioned at a 30° angle to the ground and is 112 centimeters away from ...
*December 4, 2011 by Silvia*

**Algebra1**

The area of a playground is 221 yd2. The width of the playground is 4 yd longer than its length. Find the length and width of the playground. (Hint: Include correct units in your final answer.) (3 points) pleas show me how you got the answer. Thank you:)
*May 2, 2010 by MW*

**physics**

luke skywalker must swing princess leia across a large chasm in order to escape the storm troopers. IF luke and leia's combined mass is 145 kg calculate the tension in the rope just before luke and leia start their swing when the pair makes an angle of 30.0 with the vertical/
*October 11, 2007 by confuseedd and do not like physics*

**Algebra**

The area of a playground is 221 yd^2. The width of the playground is 4 yd longer than its length. Find the length and width of the playground.
*March 28, 2011 by ismackyourfacewithabanana!*

**math**

A golf ball is to be hit 300 yards straight to make a hole in one. Having only played miniature golf, your first swing makes the ball skew 50 yards N 30 W. Trying to get back on track, the second shot goes 80 yards N 35 E. Now you are very upset with this game and you swing ...
*January 23, 2014 by Carmen*

**Physics**

At the lowest point in its swing, a 2.5 kilogram pendulum bob has 40 Joules of kinetic energy. How high will its swing when it reaches the highest point in its swing?
*March 3, 2012 by Tracy*

**math**

a square playground has area of 174 m2 .what is the approximate lenght of each side of the playground?
*March 10, 2012 by brenda*

**Math**

The area of a rectangular playground is 2,700 ft2. The length is 3 times the width.What are the dimensions of the playground?
*February 13, 2011 by David*

**Algebra 2**

Because of friction and air resistance, each swing of a pendulum is a little shorter than the previous one. The lengths of the swings form a geometric sequence. Suppose the first swing of the pendulum has an arc length of 100 cm and a return swing of 99 cm. a.)On which swing ...
*February 25, 2013 by Mia*

**Algebra 2**

Because of friction and air resistance, each swing of a pendulum is a little shorter than the previous one. The lengths of the swings form a geometric sequence. Suppose the first swing of the pendulum has an arc length of 100 cm and a return swing of 99 cm. a.)On which swing ...
*March 7, 2013 by Amber*

**Physics. PLEASE HELP!!**

A 22 kg girl slides down a playground slide that is 3.6 m high. When she reaches the bottom of the slide, her speed is 1.7 m/s. The acceleration of gravity is 9.81 m/s2. How much energy was dissipated by fric-tion? Answer in units of J
*March 30, 2012 by Ashley*

**math**

A rectangular playground is 80 feet wide and 100 feet long. Nicole made a scale drawing of the playground using a scale of 1 inch : 20 feet. What will be the length of the playground on the scale drawing?
*September 19, 2011 by Cady*

**PHYSICS**

At he lowest point in its swing, a 2.5 kilogram pendulum bob has 40 joules of kinetic energy. How high will it swing when it reaches the highest point in its swing? 40/2.5 x 9.8 = 1.63 joules
*March 6, 2012 by GRISSELL*

**math**

The length of time that it takes for a pendulum to make one complete swing depends on the length of the pendulum. The time in seconds, T, is related to the length in metres, L, through the equation T=2π√ L/9.8 Write this equation in function notation. (1 mark) State...
*March 12, 2012 by james*

**physics**

a girl pulls a wagon along a level path for a distance of 15.0 m. the handle of the wagon makes an angle of 20.0 degrees with the horizontal, the girl exerts a force of 35.0 N on the handle. Friction provides a force of 24.0 N. Find the net work done on the wagon.
*October 19, 2009 by lalaglaze*

**math**

The length of time that it takes for a pendulum to make one complete swing depends on the length of the pendulum. The time in seconds, T, is related to the length in metres, L, through the equation T=2π√ L/9.8 State the domain and range of this function. (1 mark) ...
*March 13, 2012 by james*

**ALGEBRA**

A playground is shaped like a rectangle with a width 5 times its length (l). What is a simplified expression for the distance between opposite corners of the playground? I can't copy the multi-choice answers but can you help?
*May 8, 2014 by Anonymous*

**accounting**

Quayle Corporation reports net income of $380,000 and weight-in average of 200,000 outstanding fro the year. Complete the earnings per share of Common Stock.
*January 30, 2012 by bubba*

**Math: Please check**

A playground is shaped like a rectangle with a width 5 times its length (L). What is a simplified expression for the distance between opposite corners of the playground? A.) L square root 26 B.) 5L C.) 26L^2 D.) 6L Thanks
*March 14, 2013 by Jim*

**maths --plse help me..**

The diameter of a roller is 80 cm and its length is 126 cm. It takes 750 complete revolution once over to level a playground. find the area of the ground.
*December 20, 2012 by Anonymous*

**Early Childhood Education**

Appropriate materials and equipment for outdoor play should contain which? 1. a lot of immovable parts 2. some loose parts 3. large,simple,steel units designed for a single purpose. 4. hard,strong surfaces for ground cover Shouldn't the materials and equipment contain a lot of...
*April 2, 2007 by Natasha*

**geometry**

The perimeter of rectangular playground is 200 feet. If the length is 5 feet less than twice the width, what are dimensions of the playground
*March 8, 2012 by lisa*

**pre a-p math**

a playground is 100ft by 150 ft. you want to make a scale drawing of the playground on a 8.5 by 11 paper what scale could you use? please help
*February 5, 2014 by ariana*

**Math**

Please help! Suppose one girl saves $10 every week. Another girl already has $21 and saves $3 every week. Write and solve an equation to determine when the two girls will have the saved the same amount of money. So far I have these expression for each girl: one girl has 10w ...
*December 17, 2007 by Plse Help*

**geometry**

a playground is 50 yd by 50 yd. amy walked across the playground from one corner to the opposite corner. how far did she walk.
*February 4, 2013 by poppy*

**physics1**

at a playground a child slides that makes a 42 degrees angle with the horizontal direction.The coefficient of kinetic friction for this motion is 0.20 What is the magnitude of her acceleration during her sliding
*March 12, 2012 by thandeka*

**geometry**

a playground is 50yd by 50 yd amy walked across the playground from one corner to the opposite corner. how far did she walk? i got : 100 yd is that right
*May 2, 2012 by marko*

**physics/science**

If a pendulum is not pushed, why does it not go as big when it swings back. Where does the lost PE go? ans. Since there is no force applied to the pendulum there is not enough Kinetic energy (energy of motion) to transform into potential energy to make it swing back. The ...
*February 9, 2014 by CC*

**math**

The perimeter of a rectangular playground is 40 yards. It is 1.5 yards longer that it is wide. What is area of playground?
*February 11, 2013 by Zoe*

**math**

The perimeter of a rectangular playground is 40 yards. It is 1.5 yards longer that it is wide. What is area of playground?
*February 11, 2013 by Zoe*

**science/physics**

If a pendulum is not pushed, why does it not go as big when it swings back. Where does the lost PE go? ans. Since there is no force applied to the pendulum there is not enough Kinetic energy (energy of motion) to transform into potential energy to make it swing back. The ...
*February 9, 2014 by CC*

**Geometry**

A rectangualar playground is 4 meters longer than it is wide. If the length is increased by 5m, and the width decreased b y 1 m, the area is increased by 15m SQUARED(15M2).Find the original dimensions of the playground.
*May 9, 2012 by David*

**physics**

A 38 kg girl and an 8.4 kg sled are on the frictionless ice of a frozen lake, 16 m apart bu connected by a rope of negligible mass. The girl exerts a horozontal 4.7 force on the rope. (a) What is the acceleration of the girl? m/s2 (b) What is the acceleration of the sled? m/s2...
*December 11, 2008 by johnny*

**Physics **

A pendulum consists of a swinging mass hanging from a massless string. The hanging mass is 2.0 kg and the string is 400.0 cm long. If the mass has a speed of 8.0 m/s when it passes the lowest point of its swing, a) what is the speed when the string makes an angle of 60.0o with...
*May 30, 2014 by Tom*

**Physics**

The "Great Swing" at a country fair consists of a vertical central shaft with a number of horizontal arms attached at its upper end. Each arm supports a seat suspended from a 5.00m long rod, the upper end which is fastened to the arms at a point of 3.00m from the central shaft...
*November 3, 2010 by Anonymous*

**student supervision**

which of the following infectious disease accounts for 60 to 80 percent of all school infections? (a)upper-respitary infections (my answer) (b)pink eye (c)tuberculosis (d)hepatisis a and b which of the following statements about playground moniters is correct? (a)youre not ...
*August 25, 2011 by susue*

**Calculus**

A pendulum swings through an arc length of 1120 cm (Swing #1). With each further swing, the arc length is reduced by 15 % State the growth factor. Calculate the length of the arc in swing #5 I think im supposed to use this formula again, but I dont know how to use it. Tn = ar^n-1
*September 21, 2011 by Anonymous*

**Calculus**

ABC Daycare wants to build a fence to enclose a rectangular playground. The area of the playground is 900 square feet. The fence along three of the sides costs $5 per foot and the fence along the fourth side, which will be made of brick, costs $10 per foot. Find the length of ...
*April 13, 2014 by John*

**physics**

A playground seesaw is exactly 3.00 m long. A little girl who weighs 425 N is sitting on one end. If a little boy weighing 575 N wants to sit on the other side, how far must he sit from the fulcrum to keep the seesaw perfectly balanced?
*January 9, 2013 by idkk*

**physics**

The string in the Figure is L = 135.0 cm long and the distance d to the fixed peg P is 94.5 cm. When the ball is released from rest in the position shown, it will swing along the dashed arc. How fast will it be going when it reaches the lowest point in its swing? How fast will...
*February 22, 2012 by Katie*

**ap Physics**

AP PROBLEM CHILD ON A SWING AN ADULT EXERTS A HORIZONTAL FORCE ON A SWING THAT IS SUSPENDED BY A ROPE OF LENGTH L, HOLDING IT AN AN ANGLE q WITH THE VERTICAL. THE CHILD IN THE WING HAS WEIGHT W AND DIMENSIONS THAT ARE NEGLIGIBLE COMPARED TO L. THE WEIGHTS OF THE ROPE AND OF ...
*January 3, 2011 by Anonymous*

**Calculus Hard Question**

A pendulum swings through an arc length of 1120 cm (Swing #1). With each further swing, the arc length is reduced by 15 % State the growth factor. Calculate the length of the arc in swing #5 I think im supposed to use this formula again, but I dont know how to use it. Tn = ar...
*September 21, 2011 by Anonymous*

**physics**

Two parakeets sit on a swing with their combined center of mass 15.0 cm below the pivot. At what frequency do they swing?
*July 28, 2013 by Justin*

**math**

the new playground at middeldae school will be enclosed by a fence. The playgroundnd will be rectangualar and will have an area of 225 yd. The number of yards on each side will be a whole number. What is the least amount of fencing that could be required to enclose the ...
*March 25, 2013 by Anonymous*

**Physics**

you swing a 2.2 kg stone in a circle of radius 75 cm. At what speed should you swing it so its centripetal acceleration will be 9.8 m/s^2 a rad = V^2 / R now i know R = 75 cm what do I put for V^2
*June 4, 2009 by Sarah*

**physics**

You swing a 2.00 kg stone in a circle, using the full length of a thin 80.0 cm rope. At what speed should you swing it so its acceleration will be 9.8 m/s^2?
*February 2, 2011 by mely*

**physics**

You swing a 2.00 kg stone in a circle, using the full length of a thin 80.0 cm rope. At what speed should you swing it so its acceleration will be 9.8 m/s^2?
*February 2, 2011 by andrea*

**physics**

You swing a 2.00 kg stone in a circle, using the full length of a thin 80.0 cm rope. At what speed should you swing it so its acceleration will be 9.8 m/s^2?
*February 2, 2011 by andrea*

**ipc**

your brother and you decide to swing and u push him and he reahed a max speed of 15m/s how high is he a his highest point on the swing?
*November 10, 2011 by cort*

**physics**

A child swinging on a swing set hears the sound of a whistle that is being blown directly in front of her. At the bottom of her swing when she is moving toward the whistle, she hears the higher pitch, and at the bottom of her swing, when she is moving away from the swing she ...
*March 3, 2011 by Trace*

**algebra**

The dimensions of a playground are 50 feet by 75 feet. You want to double its area by adding the same distance x to the length and width. Find x and the new dimensions of the playground.
*November 2, 2012 by kim*

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