Monday

April 21, 2014

April 21, 2014

Number of results: 44,746

**Science**

what is the acceleration of a boy on a skateboard if the unbalanced forward force on the boy is 15 N? The total mass of the boy and the skateboard in 58 kg
*Thursday, November 4, 2010 at 10:47pm by Fred*

**physical science**

What is the acceleration of a girl on a skateboard if the The unbalanced forward force on the boy is 15 N? The total mass of the boy and skateboard is 58 kg.
*Wednesday, March 16, 2011 at 3:56pm by Ariel*

**Physics**

Suppose a 68-kg boy and a 40-kg girl use a massless rope in a tug-of-war on an icy, resistance-free surface. If the acceleration of the girl toward the boy is 3.0 m/s^2, find the magnitude of the acceleration of the boy toward the girl.
*Sunday, January 3, 2010 at 2:17pm by Sasha*

**science**

A 63 kg boy and a 44 kg girl use an elastic rope while engaged in a tug-of-war on a frictionless icy surface. If the acceleration of the girl toward the boy is 1.7 m/s 2 , determine the magnitude of the acceleration of the boy toward the girl
*Monday, September 12, 2011 at 12:53pm by jasmine*

**PHYSICS**

55 kg boy and a 37 kg girl use an elastic rope while engaged in a tug-of-war on a frictionless icy surface. If the acceleration of the girl toward the boy is 2.4 m/s 2 , determine the magnitude of the acceleration of the boy toward the girl in m/s^2
*Sunday, October 6, 2013 at 12:00am by Natalie*

**physics**

Suppose a 65-kg boy and a 45-kg girl use a massless rope in a tug-of-war on an icy, resistance-free surface. If the acceleration of the girl toward the boy is 3.0 m/s2, find the magnitude of the acceleration of the boy toward the girl.
*Wednesday, October 28, 2009 at 10:08pm by Liz*

**Physics**

Suppose a 68-kg boy and a 40-kg girl use a massless rope in a tug-of-war on an icy, resistance-free surface. If the acceleration of the girl toward the boy is 3.0 m/s2, find the magnitude of the acceleration of the boy toward the girl.
*Tuesday, January 5, 2010 at 12:43pm by Sasha*

**physics**

Suppose a 64-kg boy and a 49-kg girl use a massless rope in a tug-of-war on an icy, resistance-free surface. If the acceleration of the girl toward the boy is 3.0 m/s2, find the magnitude of the acceleration of the boy toward the girl.
*Thursday, June 10, 2010 at 7:53am by Anonymous*

**physics6**

A 64-kg boy and a 42-kg girl use an elastic rope while engaged in a tug-of-war on an icy frictionless surface. If the acceleration of the girl toward the boy is 3.5 m/s2, determine the magnitude of the acceleration of the boy toward the girl.
*Sunday, December 11, 2011 at 9:06pm by Hannah*

**Physics -URGENT-**

A 55 kg boy and a 37 kg girl use an elastic rope while engaged in a tug-of-war on a frictionless icy surface. If the acceleration of the girl toward the boy is 2.4 m/s^2, determine the magnitude of the acceleration of the boy toward the girl in m/s^2
*Sunday, October 6, 2013 at 2:55pm by Natalie*

**physics**

A 58 kg boy and a 38 kg girl use an elastic rope while engaged in a tug-of-war on a frictionless icy surface. If the acceleration of the girl toward the boy is 3.1 m/s 2 , determine the magnitude of the acceleration of the boy toward the girl. Answer in units of m/s 2
*Friday, September 13, 2013 at 11:38am by Shareka*

**physics**

The forces will be equal( but opposite). Force equals mass times acceleration. Let m = 38kg (the girl's mass) Let a = 3.1m/s^2 (the girl's acceleration) Let n = 58kg (the boy's mass) Find b (the boy's acceleration). Such that: m*a = -n*b
*Friday, September 13, 2013 at 11:38am by Graham*

**science **

What is the acceleration of a boy on a skateboard is the net force on the boy is 14 N the total mass of the boy and a skateboard is 58 kilograms you said no
*Thursday, December 27, 2012 at 12:10pm by Anonymous*

**physic**

A 57 kg boy and a 42 kg girl use an elastic rope while engaged in a tug-of-war on a frictionless icy surface. If the acceleration of the girl toward the boy is 3.4 m/s2, determine the magnitude of the acceleration of the boy toward the girl. Answer in units of m/s2.
*Wednesday, September 22, 2010 at 1:03pm by Wendia*

**Physics **

A 57 kg boy and a 45 kg girl use an elastic rope while engaged in a tug-of-war on a frictionless icy surface. If the acceleration of the girl toward the boy is 1.5 m/s2, determine the magnitude of the acceleration of the boy toward the girl. Answer in units of m/s2
*Sunday, October 14, 2012 at 5:51pm by Jessica*

**Physics**

A 43.3 kg boy and a 60.0 kg girl are on the surface of a frozen lake, 10.5 m apart. Using a rope, the boy exerts a horizontal 5.90 N force on the girl, pulling her toward him. Calculate the magnitude of the boy's acceleration.
*Tuesday, January 25, 2011 at 9:20pm by Megan*

**Physics please help!!**

A 43.3 kg boy and a 60.0 kg girl are on the surface of a frozen lake, 10.5 m apart. Using a rope, the boy exerts a horizontal 5.90 N force on the girl, pulling her toward him. Calculate the magnitude of the boy's acceleration.
*Tuesday, January 25, 2011 at 8:58pm by Megan*

**Science**

a 55 kh boy and 40 kg girl usa a rope while engaged in a tug-of-war on an icy frictionless surface. If the girl accelerates towards the boy at 5.1 m/s/s, what is the acceleration of the boy towards the girl. Thank You Did I not set this up for you last nite? What is it you do...
*Saturday, December 30, 2006 at 6:55pm by leafprincess*

**physics**

A 60kg boy is riding his bike to school. His acceleration is 15 m/sec^2. Determine the magnitude of the force he is exerting.
*Tuesday, January 31, 2012 at 9:14pm by Laycee*

**physics**

A boy is sledding down a slope that is inclined at 30.0° with respect to the horizontal. A moderate wind is aiding the motion by providing a steady force of 108 N that is parallel to the motion of the sled. The combined mass of the boy and sled is 53.6 kg, and the coefficient ...
*Monday, September 24, 2012 at 6:04am by simon*

**Physics**

Since the same force is acting on both, the acceleration of the boy will be less by their mass ratio: a=(45kg/57kg) * 1.5m/s^2 = 1.184 m/s^2. Alternate Method. Fg = ma = 45 * 1.5 = 67.5 N. = Force acting on girl. Fb = Fg = 67.5 N. a = Fb/m = 67.5 / 57 = 1.184 m/s^2. = ...
*Sunday, October 14, 2012 at 5:51pm by Henry*

**Physics/Math**

A boy whirls a stone in a horizontal circle of radius 1.2 m and at height 2.0 m above ground level. The string breaks, and the stone flies horizontally and strikes the ground after traveling a horizontal distance of 10 m. What is the magnitude of the centripetal acceleration ...
*Saturday, February 3, 2007 at 7:56pm by winterWX*

**Science**

A 55 kg boy and 40 kg girl usa a rope while engaged in a tug-of-war. If the girl accelerates towards the boy at 5.1 m/s/s, what is the acceleration of the boy towards the girl? The force on the rope is the same both ways. Forceonrope=massgirl*accelerationgirl solve for the ...
*Friday, December 29, 2006 at 7:19pm by leafprincess*

**Physics**

1.A race car has a mass of 707 kg. It starts from rest and travels 42.0 m in 3.0 s. The car is uniformly accelerated during the entire time. What net force is exerted on it? 2.A 4430 kg helicopter accelerates upward at 2.2 m/s2. What lift force is exerted by the air on the ...
*Friday, October 5, 2007 at 12:54pm by Lee*

**physic**

The tension on the elastic rope can be calculated by Newton's second law: F=ma From the girl's acceleration, F can be found, which can then be applied to the boy to find his acceleration.
*Wednesday, September 22, 2010 at 1:03pm by MathMate*

**science**

a bicyclist and his bike have a combined mass of 105 kg. He is traveling at 15.0 m/s along the path when he sees a fallen tree 4 m in front of him. In order to stop before hits the tree, find the boy's minimum acceleration and the minimum force that must be applied. Thank You...
*Saturday, December 30, 2006 at 12:30pm by leafprincess*

**physics**

A car starts from rest and accelerates uniformaly at the rate of 0.98m/s in 1hr.what is its final velocity? A car starts from rest and reaches a velocity of 40m/s in 1minutes..(a)what is its acceleration?(b) If its acceleration remains constant,what will its velocity be in 15 ...
*Friday, September 23, 2011 at 12:17pm by philip*

**Physics**

Two boys standing on carts that move along a horizontal frictionless surface. The mass of each boy-cart combination is 100 kg, and each moves initially with the velocities of: Boy A 7cm/sec and Boy B: 10cm/sec. The boy on cart A throws a 2kg ball to the boy on Cart B (assume ...
*Thursday, April 11, 2013 at 5:56pm by Danisha*

**physics**

A 38.3 kg girl and a 55.4 kg boy are on the surface of a frozen lake, 10.0 m apart. Using a rope, the girl exerts a horizontal 5.50 N force on the boy, pulling him toward her. Calculate the magnitude of the girl's acceleration.
*Tuesday, February 28, 2012 at 4:14pm by meyer *

**physics**

A 38.5 kg girl and a 57.0 kg boy are on the surface of a frozen lake, 10.0 m apart. Using a rope, the girl exerts a horizontal 5.55 N force on the boy, pulling him toward her. Calculate the magnitude of the girl's acceleration
*Thursday, October 4, 2012 at 8:48pm by kay*

**physics**

an 80 kg boy holding on to a helium balloon jumps off of a 20m tall building and floats to the ground. If the boant force of the balloon is 750 N upward, what is the boy's acceleration and final velocity just before he touches the ground?
*Tuesday, October 4, 2011 at 10:59pm by zahid*

**Physics for Life science**

A boy climbs up an 8.00m high tree. To come back down, the boy slides down along a rope. The coefficient of friction between the rope and the boy is 0.40. What is the velocity with which the boy reaches ground?
*Tuesday, June 1, 2010 at 5:58am by TangenT*

**PHYSICS**

Force up on boy = rope tension T Force down on boy = m g acceleration of boy downward = a then ma = mg - T here m = 500/9.81 = 50.97 kg so 50.97 a = 500 - 350 = 150 a = 150/50.97 = 2.94 m/s^2 d = (1/2) a t^2 30 = 1.47 t^2 t = 4.52 seconds assuming 30 meters is the ground then ...
*Saturday, November 30, 2013 at 7:29pm by Damon*

**Physics**

Express the acceleration as a multiple of the gravitational acceleration, g (9.8 m/s^2) a=15 m/s divide by g, ie 15g's = 15*9.8m/s
*Wednesday, April 11, 2007 at 1:35am by Katie*

**Trigonometry**

A little boy is flying a kite. The string of the kite makes an angle of 30 dgrees with the ground. If the height of the kite is h equals 15 m, find the length (in meters)of the string that the boy has used.
*Sunday, January 24, 2010 at 1:43pm by Rob*

**physics**

A young boy swings a yo-yo horizontally above his head at an angular acceleration of 0.42 rad/s2. If the string is 0.55 m long, what is the tangential acceleration of the yo-yo?
*Wednesday, February 22, 2012 at 10:38am by Anonymous*

**Physics**

A boy's hand pushes a ball through a vertical distance of 1.45 m as he throws the ball straight upward. Once the ball leaves his hand it travels an additional 22 m (straight up) before returning to earth. Find the acceleration of the ball while it was in the boy's hand
*Saturday, January 19, 2013 at 6:45pm by Luellen*

**physics**

Consider a boy standing on a building that is 500m height and another boy standing on the ground. If the boy on the ground throws a ball to the boy standing on the building, with what vertical velocity must the ball be thrown such that it reaches the boy standing on the ...
*Wednesday, July 27, 2011 at 9:04pm by divya*

**Poem Fable for when there's no way out**

Could you help me with this poem I read it out loud I don't understand it one bit. Here's the questions. 1. How does the boy hear about the wonder horse? 2. Why does the boy admire the horse? 3. In what season does the boy capture the horse? 4. How does the boy lose the horse?
*Sunday, January 25, 2009 at 1:19pm by Crystal*

**science**

A Boy of mass 25 kg climbs atop a playground slide of height h= 3 m. When the boy slides down the inclined board, the work done to overcome friction is 550 Joule. What is the boy’s speed before he touches the ground.
*Sunday, February 16, 2014 at 11:59pm by pooja*

**Physics**

A boy sits in a tire that is attached to a rope that passes over a pulley fastened to the ceiling and then passes back down to the boy's hands. The weight of the boy plus the tire is W. The force with which the boy must pull on the free end of the rope to support his weight in...
*Saturday, January 9, 2010 at 8:27pm by Phil*

**CALCULUS - Check my answers :)**

#5 At a time of t seconds after the boy passed under the balloon, distance covered by boy = 15t height of balloon = 5 + 5t let the distance between them be d ft d^2 = (5t+5)^2 + (15t)^2 2d dd/dt = 2(5t+5)(5) + 2(15t)(15) dd/dt =( 5(5t+5) + 15(15t) )/d when t = 3, d^2 = 20^2 + ...
*Thursday, December 19, 2013 at 7:18pm by Reiny*

**5th grade science**

When a boy land on a trampoline, he pushes down on the trampoline. What for is the reaction force? A. gravity pulling the boy down B.the boy pushing down C.the friction between the boy and the trampoline D. the trampoline pushing upward
*Saturday, October 11, 2008 at 9:32pm by Summer*

**physics**

acceleration= changevelocity/time=8/4 m/s^2 v(15)= acceleration*15
*Wednesday, December 7, 2011 at 12:36pm by bobpursley*

**physics**

Tension of rope = T N Mass of girl, m = 45 kg Acceleration = 3.0 m/s² T = ma = 135 N Mass of boy, M = 65 kg T = MA, solve for acceleration A.
*Wednesday, October 28, 2009 at 10:08pm by MathMate*

**physics**

Assuming they travel in one-dimension we can use the x(t)= vt+1/2 at^2. The slower boy will travel a distance X and the faster boy will travel a distance 100-X because X will be the meeting point. And there is no acceleration involved, so the equation will look like x=5t and ...
*Friday, September 2, 2011 at 12:48am by Wilson*

**Physics**

How am I doing this problem wrong On a strange, airless planet, a ball is thrown downward from a height of 17 m. The ball initally travels at 15 m/s. If the ball hits the ground in 1 s, what is this planet's gravitational acceleration? by definition of acceleration a = (v - vo...
*Sunday, October 11, 2009 at 4:25pm by Physics*

**math,(fraction)**

girls = 2/5 * 25 = 10 boys = 25-10 = 15 If each girl had g books, each boy had g/3 book total books: 10g + 15g/3 = 135 15g = 135 g = 9 so each girl had 9 books, each boy had 3. 10*9 + 15*3 = 90 + 45 = 135 books in all
*Tuesday, December 27, 2011 at 12:26am by Steve*

**child psychology**

Typically when paired with a boy in a laboratory play session, a two year old girl is likely to A. stand idly while the boy explores the toy B.assume domineering behavior, telling him what to do C.actively explore the surroundings D.play cooperatively with the boy I think its ...
*Monday, March 26, 2012 at 1:09pm by sarah*

**algebra 11**

At Joseph Middle School, the probability that a boy takes English and Science is 0.087. The probability that a boy takes English is 0.68. What is the probability that a boy takes Science given that the boy is taking English?
*Thursday, March 22, 2012 at 7:01pm by Shad*

**English**

1. I will buy Mom a scarf for her birthday. (What is the part of speech of 'for her birthday'? Is it an adjective phrase modifying 'scarf', or is it an adverbial phrase modifying 'buy'? 2. Look at the little boy. (What is a little boy? A young boy or a short boy? Though he is ...
*Friday, March 13, 2009 at 8:58pm by John*

**maths**

1/4 girl + 2/5 boy = 110 3/4 girl + 3/5 boy = 335- 110 =225 3/4 girl + 6/5 boy = 110 X 3 = 330 3/5 boy = 330 - 225 = 105 1/5boy = 105/3 = 35 5/5 boy = 35 X 5 = 175 (answer)
*Saturday, September 10, 2011 at 12:28am by MnZsT*

**english**

barrio boy is about a boy that moved to america and is learning english and the other is about a boy who is scared to do stuff but his sister isnt and he tries selling papers but he fails so his sister sells them and he desides to be a writer when he is 11
*Wednesday, January 18, 2012 at 11:38pm by shey*

**odds of...**

Does anyone know the odds of having Two girls as children as opposed to two males or one male and one female? I say it is 25 percent but my friend says it is 33.3 percent. Can anyone clarify? Thanks! You are correct. Assuming tht boy and girls are equally probable each time, ...
*Monday, August 8, 2005 at 1:09am by Lynn*

**engineering**

a boy of mass 40kg is sliding down the spiral slide at a constant speed such that his position is measured by theta=(0.7t) rad and z=(-0.5t) m where t is in seconds. How do you find the components of forces Fr, Ftheta and Fz which the slide exerts on teh boy at the instant ...
*Saturday, November 15, 2008 at 1:01pm by sarah*

**English**

1. The boy is arm wrestling the girl. 2. The boy is arem wrestling with the girl. 3. The boy is having an arm wrestle with the girl. 4. The boy is having an arm wrestling against the girl. 5. The boy is doing an arm wrestle with the girl. 6. The boy is doing an arm wrestling ...
*Tuesday, May 29, 2012 at 4:53am by rfvv*

**PHYICAL**

A car acceleration from rest 45 m\s in 15 s average acceleration is.....
*Wednesday, July 11, 2012 at 11:45am by Q1*

**Physica**

A car acceleration from rest 45 m\s in 15 s average acceleration is.
*Sunday, July 15, 2012 at 3:15am by Q1*

**physics**

What is a tire's angular acceleration if the tangential acceleration at a radius of 0.15 m is 9.4 x 10-2 m/s2?
*Monday, March 19, 2012 at 10:32am by Anonymous*

**physics**

A car accelerates at a constant rate from zero to 25.9 m/s in 7.6 seconds and then slows to 15.4 m/s in 5 seconds. What is its average acceleration to the nearest tenth of a m/s2 during the entire time?What was the acceleration during the first acceleration period?
*Wednesday, May 22, 2013 at 4:29pm by giggles24*

**Physics**

An airplane is ﬂying in a horizontal circle at a speed of 104 m/s. The 88.0 kg pilot does not want the centripetal acceleration to exceed 6.15 times free-fall acceleration. Find the minimum radius of the plane’s path. The acceleration due to gravity is 9.81m/s2. Answer ...
*Friday, February 8, 2013 at 5:03pm by Dave*

**Physics**

A boy on a 2.2kg skateboard initially at rest tosses a 7.9kg jug of water in the forward direction. If the jug has a speed of 3.2m/s relative to the ground and the boy and skateboard move in the opposite direction at .56m/s, find the boy's mass. Answer in units of kg.
*Friday, April 1, 2011 at 4:49pm by Fg*

**physics**

15 N is mass *acceleration. In this case, acceleration= gravity.
*Wednesday, January 23, 2013 at 12:46pm by Devron*

**Physics**

You don't need the velocity to answer the question. You need the acceleration at a particular time. This is not a constant-acceleration problem. The acceleration is the second derivative of the x(t) function, a(t) = x''(t) = 7.00 - 15 t Multiply the value of a at 3.45 s by the...
*Tuesday, September 22, 2009 at 1:55am by drwls*

**Physics**

There's 2. 1) A 1200-kg airplane starts from rest and, with a constant average forward acceleration of magnitude 5.0m/s^2, reaches its take off speed in 9.00 s. The runway is 300 m long. What is the planes takeoff speed? 2) A boy is attempting to swim directly across a river. ...
*Sunday, September 12, 2010 at 11:07pm by Johnny*

**Math**

In a family with two children, what are the probabilities of the following outcomes, assuming that the birth of boys and girls is equally likely? a. Both are boys. b. The first is a girl and the second a boy. c. Neither is a girl. d. At least one is a girl. I was wondering ...
*Wednesday, November 18, 2009 at 5:32pm by Punkie*

**Physics**

On a mass of 100 kg, a force of 120 N acts right and at an angle of 30 degrees to the horizontal. If the coefficient of sliding friction is .1 what is the acceleration of the mass? 100N* cos30 -(100sin30+mg)(.1)= m*acceleration does "m*acceleration mean the acceleration of the...
*Wednesday, August 23, 2006 at 10:26pm by Tiff*

**English:Poetry**

Oh, okay. Because I was thinking that the lines " Its woods, and that uncertain heaven recieved/ into the bosom of the steady lake,/ this boy was taken from his mades, and died Because I though recieving into the bosom meant "into the embrace" or something similar so that the ...
*Tuesday, January 24, 2012 at 5:41am by Em*

**Physics**

A boy starts at rest and slides down a frictionless slide as in the figure below. The bottom of the track is a height h above the ground. The boy then leaves the track horizontally, striking the ground a distance d as shown. Using energy methods, determine the initial height H...
*Monday, October 17, 2011 at 4:44pm by Brandon*

**physics**

Rocket-powered sleds are used to test the responses of humans to acceleration. Starting from rest, one sled can reach a speed of 444 m/s in 1.80 s and can be brought to a stop again in 2.15 s. (a) Calculate the acceleration of the sled when starting, and compare it to the ...
*Tuesday, September 21, 2010 at 10:21pm by Anonymous*

**physics**

A boy on roller blades throws a jug of water away from himself, giving it a speed of 10 m/s. The boy's mass is 50 kg and the mass of the jug and water is 9 kg. What is the velocity gained by the boy?
*Thursday, December 30, 2010 at 6:25pm by Sam*

**physics (mechanics)**

A running man has half the kinetic energy of a boy half his mass. The man speeds up by 1.30 m/s and then has the same kinetic energy as the boy. What is the speed (in meters/second) of the boy?
*Thursday, April 12, 2012 at 11:20am by andrew*

**Physics - acceleration..need to find velocity**

Never mind. I see acceleration is not constant. However, I get 15.3 m/s. I will have to recheck my math.
*Friday, October 21, 2011 at 11:22am by Steve*

**Physics**

A boy has a mass of 45 kg and is running with a velocity of 8 m/s. Find the boy's kinetic energy.
*Monday, October 17, 2011 at 6:05am by angela*

**Physics**

A 10 m long frictionless ramp is inclined at an angle of 30 degress to the horizontal. A boy of mass 57 kg coasts down the incline on a skateboard of mass 3.0 kg. The acceleration due to gravity may be taken as 9.8 m/s^2 and the effects of air resistance can be ignored. a) ...
*Saturday, October 22, 2011 at 10:13am by Erin*

**english**

The day is the white boy and night is the black boy.
*Monday, August 23, 2010 at 7:50pm by bindiya farswani*

**English**

1. The boy cleaned his room as his mother asked. 2. The boy cleaned his room as his mother asked for. 3. The boy cleaned his room as his mother said. 4. The boy cleaned his room as his mother wanted. 5. The boy cleaned his room as his mother told. 6. The boy cleaned his room ...
*Monday, August 29, 2011 at 4:54am by rfvv*

**physics**

Rocket-powered sleds are used to test the responses of humans to acceleration. Starting from rest, one sled can reach a speed of 444 m/s in 1.80 s and can be brought to a stop again in 2.15 s. (b) Find the acceleration of the sled as it is braking and compare it to the ...
*Friday, November 26, 2010 at 1:47am by javane*

**Physics**

A car is traveling around a horizontal circular track with radius r = 190.0 m at a constant speed v = 22.0 m/s as shown. The angle èA = 15.0° above the x axis, and the angle èB = 63.0° below the x axis. 1) What is the magnitude of the car’s acceleration? 2) What is the x ...
*Saturday, January 19, 2013 at 7:08pm by Anonymous*

**physics**

A boy standing in a ditch throws a baseball upward toward his father. The ball leaves his hand at ground level, with an initial speed of 15.0 m/s, at an angle of theta = 53.0 degrees from the horizontal. The boy's father reaches up and catches the ball over his head, at a ...
*Sunday, October 16, 2011 at 2:58pm by tab*

**language arts**

breaking it down into simpler structure would be: The boy tricked the girl subject is boy.
*Monday, August 31, 2009 at 10:01pm by lina*

**physics**

the mass of the boy is 70kg. calculate the force in newtons acting on the boy due to his deceleration. how do i work this out
*Saturday, March 31, 2012 at 5:44am by evie*

**Physics**

Can someone please tell me if I've approached this homework problem correctly. A boy is running at his best speed of 6.0 m/s to catch a bus stopped at the lights. When he is 16 m from the bus, the light goes green and the bus pulls away at an acceleration of 1.0 m/s/s. Does he...
*Wednesday, March 4, 2009 at 12:00am by Brigid*

**math**

5. A couple plans to have 3 children. Find the possible ways the couple can have 3 children. - 1a3b+3a2b1+3a1b2+1 a0b3 1a3= 1 case with boy, boy, boy 3a2b1= 3 cases with 2 boys and a girl 3a1b2=3 cases with a boy and 2 girls 1b3= 1 case of girl, girl and girl.
*Monday, January 23, 2012 at 12:29am by LOL*

**Physics**

A boy on a 2.4 kg skateboard initially at rest tosses a(n) 8.2 kg jug of water in the forward direction. If the jug has a speed of 3.0 m/s relative to the ground and the boy and skateboard move in the opposite direction at 0.57 m/s, ﬁnd the boy’s mass. Answer in units ...
*Wednesday, January 16, 2013 at 6:46pm by Cesar*

**Math**

The table gives, for a particular object, the acceleration A caused by an applied force F. Acceleration (A)10 15 20 25 30 Force(F) 50 75 100 125 150 What force is required to produce an acceleration of 19? A) 19 B) 95 C) 114 D) 38
*Thursday, August 5, 2010 at 2:03pm by Sharee*

**physics**

a boy on a small hill aims his water ballon slingshot horizontally straight horizontally at a second boy hanging from a branch of a tree at a distance of d away . at the instant ballon is released the second boy let go and fall off froom tree to aviod eing hit will his plan ...
*Friday, February 17, 2012 at 12:26pm by Anonymous*

**English**

1. It's only five minutes' walk. 2. It's only within five minutes' walk. 3. It's only in five minutes' walk. (Are they all correct?) 4. The naughty boy laughed at the handicapped. 5. The naughty boy made a fool of the handicapped. 6. The naughty boy made fun of the handicapped...
*Wednesday, April 29, 2009 at 6:56am by John*

**physics**

A 48 kg cart is moving across a frictionless floor at 3.3 m/s. A 50 kg boy, riding in the cart, jumps off the cart so that he hits the floor with zero velocity. a.What is the velocity of the cart after the boy jumped? b.What was the change in momentum of the boy? c. What ...
*Wednesday, January 4, 2012 at 10:55am by JW*

**math**

a boy is walking at dusk and notices his shado from a nearby street light. the boy is 5 feet tall and the street light is 12 feet above the ground. When the boy is 4 feet from the base of the street light how long will his shadow be?
*Monday, April 1, 2013 at 6:48am by Ro*

**Physics**

A boy pushes his friend across a skating rink. Since the frictional forces are very small, the force exerted by the boy on his friend's back is the only significant forece acting on the friend in the horizontal direction. Is the change in kinetic energy of the friend greater ...
*Sunday, November 14, 2010 at 9:43pm by Taylor*

**English**

1. This is the boy whom Mary likes. 2. This is the boy who Mary likes. 3. This is the boy Mary likes. (Are they all grammatical? When do we use Sentence 2?)
*Monday, April 8, 2013 at 9:35pm by rfvv*

**Physics**

On a mass of 100 kg, a force of 120 N acts right and at an angle of 30 degrees to the horizontal. If the coefficient of sliding friction is .1 what is the acceleration of the mass? Net force= mass*acceleration Horizontal force -frictionalforce = mass*acceleration 100N* cos30...
*Monday, August 21, 2006 at 5:52pm by Tiff*

**Writing**

Suppose the boy ends up with a third girl? The two best friends could then find that their friendship is more important than any boy.
*Sunday, February 15, 2009 at 5:52pm by Ms. Sue*

**math**

Assuming boy and girl babies are equally likely, find the probability that a family with three children will have exactly 1 boy
*Sunday, November 3, 2013 at 8:31pm by Jazmine*

**physics 20 **

A speed velocity of a a rocket with a mass of 0.25 kg passes from 15 m/s[up] to 40 m/s[up] in 0.60s. calculate the force of the escaped gasses of the rocket. **** that's what i've done, so far data: m = 0.25kg initial velocity = 15 m/s final velocity = 40 m/s time = 0.60s ...
*Tuesday, November 3, 2009 at 10:08pm by Adrienne *

**physics 20 **

A speed velocity of a a rocket with a mass of 0.25 kg passes from 15 m/s[up] to 40 m/s[up] in 0.60s. calculate the force of the escaped gasses of the rocket. **** that's what i've done, so far data: m = 0.25kg initial velocity = 15 m/s final velocity = 40 m/s time = 0.60s ...
*Tuesday, November 3, 2009 at 10:09pm by Adrienne *

**Physics/Calculus**

At a county fair, a boy and two friends bring their teddy bears on the giant Ferris wheel. The wheel has a diameter of 14.8 m, the bottom of the wheel is 1.8 m above the ground and its rim is moving at a speed of 1.0 m/s. The boys are seated in positions 45° from each other. ...
*Thursday, October 14, 2010 at 8:16pm by Donny*

**algebra**

Bad boy is fleeing the scene of a crime at 75 mph. Half an hr. later the police chase after him following his same route-traveling at 90 mph. Bad boy thought he got away... but he didn't... How long had Bad boy been traveling when the police caught him?
*Monday, October 15, 2012 at 7:54pm by Eliza *

**physics**

boy pulls a toy cart of mass 2 kg with a force of 3 N at an angle of 60° with respect to the horizontal road. What is the acceleration produced by the cart?
*Friday, October 15, 2010 at 5:14pm by kimberly*

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