Thursday

July 31, 2014

July 31, 2014

Number of results: 80,149

**physics (fixed) **

Two air-track carts move toward one another on an air track. Cart 1 has a mass of 0.34 kg and a speed of 1.1 m/s . Cart 2 has a mass of 0.68 kg and a speed of 0.55 m/s. Calculate the system's kinetic energy.
*March 17, 2010 by Kyle*

**physics**

Two air-track carts move toward one another on an air track. Cart 1 has a mass of 0.34 kg and a speed of 1.1 m/s . Cart 2 has a mass of 0.68 kg and a speed of 0.55 m/s .
*March 17, 2010 by Kyle*

**Physics**

Two air-track carts move toward one another on an air track. Cart 1 has a mass of 0.336 kg and a speed of 1.16 m/s. Cart 2 has a mass of 0.634 kg. What speed must cart 2 have if the total momentum of the system is is to be zero? What is the system's kinetic energy?
*November 5, 2012 by Rocky*

**Physics**

Two carts with masses of 4.24 kg and 3.44 kg move toward each other on a frictionless track with speeds of 4.90 m/s and 3.51 m/s respectively. The carts stick together after colliding head-on. Find the final speed.
*December 8, 2011 by Emily*

**Physicss....**

Two carts with masses of 4.24 kg and 2.22 kg move toward each other on a frictionless track with speeds of 4.55 m/s and 3.16 m/s respectively. The carts stick together after colliding head-on. Find the final speed.
*December 15, 2011 by Marie*

**physics**

Two carts with masses of 4.00 kg and 3.40 kg move toward each other on a frictionless track with speeds of 4.70 m/s and 3.56 m/s respectively. The carts stick together after colliding head-on. Find the final speed.
*November 8, 2012 by Brandon*

**physics**

Two carts with masses of 4.00 kg and 3.24 kg move toward each other on a frictionless track with speeds of 4.90 m/s and 3.35 m/s respectively. The carts stick together after colliding head-on. Find the final speed.
*May 10, 2013 by Anonymous*

**Physics**

Two carts with masses of 4.82 kg and 2.72 kg move toward each other on a frictionless track with speeds of 5.03 m/s and 3.52 m/s respectively. The carts stick together after colliding head-on. Find the final speed.
*January 9, 2014 by Daijha*

**physics**

Two carts with masses of 4.3 kg and 3.0 kg move toward each other on a frictionless track with speeds of 5.7 m/s and 4.4 m/s, respectively. The carts stick together after colliding head-on. Find their ﬁnal speed. Answer in units of m/s
*January 30, 2012 by jessy*

**physics**

Two carts with masses of 15.5 kg and 1.0 kg, respectively, move in opposite directions on a frictionless horizontal track with speeds of 6.0 m/s and 2.0 m/s, respectively. The carts stick together after colliding head-on. Find the final speed of the two carts. m/s
*January 26, 2011 by jesse*

**physics **

two air carts of mass m1=0.87kg and m2=0.48kg are placed on a frictionless track.cart 1 is at rest initally, and a spring bumper with a force constant of 690N/m. cart 2 has a flat metal surface for a bumper, and move toward the bumper of the stationary cart with an intial ...
*November 18, 2010 by jheel*

**Physics**

two carts with masses of 10.0kg and 2.5kg move in opposite directions on a frictionless track, with speeds of 6.0m/s and 3.0m/s respectively. The carts stick together after colliding head on. Find the final speed of the two cars
*April 26, 2012 by Sarah*

**physics**

two air carts of mass m1=0.84kg and m2=0.42kg are placed on a frictionless track. cart1 is at rest and has a spring bumper of constant force F=690N/m.cart2 has a metal bumper and moves towards cart1 with a speed V=0.68m/s. A) what is the speed of the two carts at the momentum ...
*July 6, 2011 by said*

**ohy**

Carts of mass 3 kg and 10 kg move on a frictionless horizontal track with speeds of 4 m/s and 3 m/s, respectively. The carts collide and stick together. Find: a) The velocity of the carts just after collision. b) The loss of kinetic energy due to the collision.
*January 26, 2014 by killi*

**physics**

Two carts with masses of 11.7 kg and 2.5 kg move in opposite directions on a frictionless horizontal track with speeds of 6.6 m/s and 3.1 m/s, respectively. The carts stick together after colliding head-on. Find their ﬁnal speed. Answer in units of m/s
*January 30, 2012 by zavy*

**Physics Classical Mechanics**

The figure below shows the experimental setup to study the collision between two carts. In the experiment cart A rolls to the right on the level track, away from the motion sensor at the left end of the track. Cart B is initially at rest. The mass of cart A is equal to the ...
*October 28, 2013 by Anonymous*

**college physics**

three carts of masses 4.0kg, 10kg, and 3.0kg move on a frictionless horizontal track with speeds of 5.0m/s, 3.0m/s, and 4.0m/s. The carts stick together after colliding. find the velocity of the three carts.
*June 1, 2008 by sarah*

**physics**

Three carts of masses 5 kg, 12 kg, and 3 kg move on a frictionless horizontal track with speeds of 5 m/s, 8 m/s, and 4 m/s, as shown in ﬁgure. The carts stick together after colliding. 5 kg 12 kg 3 kg 5 m/s 8 m/s 4 m/s Find the ﬁnal velocity of the three carts. ...
*February 1, 2012 by ntirandekura*

**physics**

Two air-track carts are sliding to the right at 1.0 m/s and held together by a string. The spring between them has a spring constant of 140 N/m and is compressed 4.5 cm. The carts slide past a flame that burns through the string holding them together. Afterward, what are the ...
*November 30, 2009 by Zach*

**Physics -Conservation of Momentum-**

1) A 1 kg mass moving at 1 m/s has a totally inelastic collision with a 0.7 kg mass. What is the speed of the resulting combined mass after the collision? 2) A cart of mass 1 kg moving at a speed of 0.5 m/s collides elastically with a cart of mass kg at rest. The speed of the ...
*February 24, 2013 by Isis*

**Physics -Conservation of Momentum-**

1) A 1 kg mass moving at 1 m/s has a totally inelastic collision with a 0.7 kg mass. What is the speed of the resulting combined mass after the collision? 2) A cart of mass 1 kg moving at a speed of 0.5 m/s collides elastically with a cart of mass kg at rest. The speed of the ...
*February 24, 2013 by Isis*

**Physics**

An air-track cart of mass 0.10 is moving with a speed 1.2 to the right when it collides with a cart of mass 0.24 that is at rest. Each cart has a wad of putty on its bumper, and hence they stick together as a result of their collision. Suppose the average contact force between...
*March 2, 2013 by Madison*

**Physics**

A 3.0-kg cart is rolling along a frictionless, horizontal track towards a 1.2-kg cart that is held initially at rest. The carts are loaded with strong magnets that cause them to attract one another. Thus, the speed of each cart increases. At a certain instant before the carts ...
*August 5, 2011 by Kristi*

**physics**

A 2.4-kg cart is rolling along a frictionless, horizontal track towards a 1.3-kg cart that is held initially at rest. The carts are loaded with strong magnets that cause them to attract one another. Thus, the speed of each cart increases. At a certain instant before the carts ...
*April 15, 2013 by Anonymous*

**Help ?**

Two carts, A and B, are connected by a rope 39 ft long that passes over a pulley P (see the figure). The point Q is on the floor h = 12 ft directly beneath P and between the carts. Cart A is being pulled away from Q at a speed of 3.5 ft/s. How fast is cart B moving toward Q at...
*March 8, 2012 by Nurcan*

**Physics Light and Color **

Suppose that you close one eye, and see two objects, C and D. As you move your head toward the right, C appears to move toward the left compared to D. Which object is closer? Explain.
*December 6, 2010 by Amanda*

**Physics ~really need help!~**

1) A 1 kg mass moving at 1 m/s has a totally inelastic collision with a 0.7 kg mass. What is the speed of the resulting combined mass after the collision? 2) A cart of mass 1 kg moving at a speed of 0.5 m/s collides elastically with a cart of mass kg at rest. The speed of the ...
*February 25, 2013 by Isis*

**Calculus Help Please!!!**

Two carts, A and B, are connected by a rope 39 ft long that passes over a pulley P (see the figure). The point Q is on the floor h = 12 ft directly beneath P and between the carts. Cart A is being pulled away from Q at a speed of 3.5 ft/s. How fast is cart B moving toward Q at...
*March 30, 2014 by Layla*

**Physics**

Two identical gliders slide toward each other on an air track. One moves at 2 m/s and the other at 1 m/s. If they stick together, the combination slides at? Why?
*February 19, 2014 by Meaka*

**pop**

Two identical gliders slide toward each other on an air track. One moves at 2 m/s and the other at 1 m/s. If they stick together, the combination slides at ____________________. A) 0.5 m/s. B) 1 m/s. C) 1.5 m/s D) 2 m/s E) 2.5 m/s.
*February 19, 2012 by Anonymous*

**physic**

please help me im stuck. A 400 g air-track glider attached to a spring with spring constant 9.00 N/m is sitting at rest on a frictionless air track. A 600 g glider is pushed toward it from the far end of the track at a speed of 94.0 cm/s. It collides with and sticks to the 400...
*December 5, 2009 by jordan*

**principles of physics**

Two identical gliders slide toward each other on an air track. One moves at 2 m/s and the other at 1 m/s. If they stick together, the combination slides at ____________________. A) 0.5 m/s. B) 1 m/s. C) 1.5 m/s D) 2 m/s E) 2.5 m/s.
*February 19, 2012 by britches*

**physics **

A 1.o kg cart A and 2.0 kg cart B are at rest on a frictionless table. A cord and a spring of negligible mass join the two carts. The spring is compressed 0.060m between the two carts until the spring's potential energy is 12 Joules. When the cord is cut, the spring will force...
*January 9, 2011 by unknown *

**physics**

The drawing below shows two laboratory carts (each has a mass of 1.0 kg) X and Y in contact with a compressed exploder spring between them. The mass on cart Y is 2.33 kg, distance A is 6 cm, distance B is 9 cm. What mass must be placed on cart X, such that after the explosion ...
*February 28, 2012 by Katie*

**physics**

A 10 kg cart was observed moving north with a speed of 15 m/s before it collided with an identical cart at rest. The collision was observed to cause the carts to couple and move together as one. What is in Joules the kinetic energy of the system of both carts after the collision?
*September 20, 2011 by Elisabeth*

**Physics-10**

Two identical gliders slide toward each other on an air track. One moves at 1m/s and the other at 2m/s. they collide and stick. the combined mass moves at A. 1.5m/s B. 1/3m/s C. 1/6m/s D. 3/4m/s E. 1/2m/s which of this options is the right answer?
*March 4, 2011 by Stanley*

**physics**

A 10 kg cart was observed moving north with a speed of 15 m/s before it collided with an identical cart moving south at 10 m/s. The collision was observed to cause the carts to couple and move together as one. What is in kg m/s the combined momentum of both carts before the ...
*September 20, 2011 by Elisabeth*

**PHYSICS**

A Few questions- please help!!! also show steps! What magnitude of force, acting for 0.025 s, will change the velocity of a 100 g ball from 30 m/s eastward to 40 m/s westward? A girl holds a 1.7 kg air rifle loosely and fires a bullet of mass 2 g. The muzzle velocity of the ...
*January 4, 2012 by Dyl*

**physics**

Two carts of equal mass, m = 0.280 kg, are placed on a frictionless track that has a light spring of force constant k = 51.9 N/m attached to one end of it. The red cart is given an initial velocity of v0 = 3.50 m/s to the right, and the blue cart is initially at rest. If the ...
*October 27, 2008 by Sandhya*

**Physics**

In a supermarket parking lot, an employee is pushing ten empty shopping carts, lined up in a straight line. The acceleration of the carts is 0.080 m/s2. The ground is level, and each cart has a mass of 25 kg. (a) What is the net force acting on any one of the carts? N (b) ...
*September 17, 2007 by NHS*

**physics**

We have two carts moving towards each other at different speeds andstick together after colliding. Use the information to calculate the velocity of the two carts after the collision. Remember that the carts are moving in opposite directions before the collision and ignore ...
*July 4, 2012 by hayley*

**Physics**

Two carts, one twice as heavy as the other, are at rest on a horizontal frictionless track. A person pushes each cart with the same force for 6.00 s. If the kinetic energy of the lighter cart after the push is K, the kinetic energy of the heavier cart is A. 1/4 K B. 1/2 K C. K...
*March 5, 2011 by Joe *

**physics**

Two carts, one twice as heavy as the other, are at rest on a horizontal frictionless track. A person pushes each cart with the same force for 4.00 s. If the magnitude of the momentum of the lighter cart after the push is P, the magnitude of the momentum of the heavier cart is ...
*March 5, 2011 by Joe *

**physics**

Two carts, one twice as heavy as the other, are at rest on a horizontal frictionless track. A person pushes each cart with the same force for 4.00 s. If the magnitude of the momentum of the lighter cart after the push is P, the magnitude of the momentum of the heavier cart is ...
*March 6, 2011 by Ana*

**physics**

Two carts, one twice as heavy as the other, are at rest on a horizontal frictionless track. A person pushes each cart with the same force for 6.00 s. If the kinetic energy of the lighter cart after the push is K, the kinetic energy of the heavier cart is A. 1/4 K B. 1/2 K C. K...
*March 6, 2011 by Ana*

**Physics**

I know I said I didn't know how to start my last question and them figured it out on my own but this one I have tried to work out and really can't get. We have two carts that have magnets to keep them from touching. One cart is initially at rest and we push the second cart ...
*July 4, 2012 by hayley*

**Physics**

A cart of mass m1 = 12 kg slides down a frictionless ramp and is made to collide with a second cart of mass m2 = 21 kg, which then heads into a vertical loop of radius 0.26 m, but the carts stick together after the collision.Find the height h from which cart 1 would need to ...
*October 13, 2013 by Ryan*

**Physics please help!**

I have tried to work this one out and really can't get it. We have two carts that have magnets to keep them from touching. One cart is initially at rest and we push the second cart towards it. Because the two carts will not actually touch, the collision is elastic. Use the ...
*July 5, 2012 by hayley*

**Physics**

Am I correct? Two carts have a compressed spring between them and are initially at rest. One of the carts has total mass, including its contents, of 5.0 kg, and the other has total mass of 3.0 kg. If the 3.0 kg cart is moving at 3.0 m/s after the spring is allowed to push the ...
*February 3, 2014 by Me and I*

**Physics**

Hi, I have two homework problems I am having issues with. 1. Two carts of equal mass, m = 0.250 kg, are placed on a frictionless track that has a light spring of force constant k = 53.0 N/m attached to one end of it. The red cart is given an initial velocity of V = 2.55 m/s to...
*November 12, 2006 by Jennifer2008*

**physics 111**

A runner times his speed around a circular track with a circumference of 0.508 mi. At the start he is running toward the east and the track starts bending toward the north. If he goes halfway around, he will be running toward the west. He finds that he has run a distance of 0....
*September 14, 2007 by bob*

**physic**

Six roller-coaster carts pass over the same semicircular "bump." The mass M of each cart (including passenger) and the normal force n of the track on the cart at the top of each bump are given in the figures. Iam given the force in N of the cart at the peak of the loop and the...
*October 27, 2010 by mike*

**physics**

A ski jumper starts from rest 44.0 m above the ground on a frictionless track, and flies off the track at an angle of 45.0° above the horizontal and at a height of 14.0 m from the ground. Neglect air resistance. (a) What is his speed when he leaves the track? m/s (b) What is ...
*November 8, 2012 by physics help!!*

**Physical Science**

Two carts ( a's mass = 4.5 kg and b's mass = 1.5 kg) are held against a strong compressed string. The carts are released simultaneously, and B moves off to the right wqith a speed of 2.0 m/s. What is A's initial velocity? Please show work.
*September 21, 2011 by Aubbie*

**physics**

two carts are on a frictionless surface. a compressed spring acts upon te carts, and the 1.5 kg cart moves with a velocity 27 cm/s to the left. what is the velocity of the 4.5 kg cart?
*January 31, 2011 by sabeen*

**Science: Physics**

A physics teacher shoots a .30 caliber rifle at a 0.47 kg block of wood. The rifle and wood are mounted on separate carts that sit atop an air track (like a linear air hockey table--ie. frictionless). The 5.7 kg rifle fires a 27 gram bullet at 227 m/s in the positive direction...
*January 6, 2011 by Joan*

**Physics**

Two blocks move along a linear path on a nearly frictionless air track. One block, of mass 0.120 kg, initially moves to the right at a speed of 4.90 m/s, while the second block, of mass 0.240 kg, is initially to the left of the first block and moving to the right at 7.40 m/s. ...
*October 18, 2012 by Pat*

**physics**

Two blocks move along a linear path on a nearly frictionless air track. One block, of mass 0.104 kg, initially moves to the right at a speed of 4.70 m/s, while the second block, of mass 0.208 kg, is initially to the left of the first block and moving to the right at 6.50 m/s. ...
*November 29, 2012 by Anthony*

**Physics**

A ski jumper starts from rest 51.0 m above the ground on a frictionless track and flies off the track at an angle of 45.0° above the horizontal and at a height of 12.0 m above the ground. Neglect air resistance. (a) What is her speed when she leaves the track? (b) What is the ...
*May 3, 2011 by Dani*

**physics**

a fan on a floating barge blows air at high speed toward the right. a)will the barge move? if so, what direction? explain. B) a sail is now put up on the barge so that the fan blows air towards the sail. will the barge move. if so, what direction? explain.
*January 6, 2008 by dude*

**physic HELP**

On a banked race track, the smallest circular path on which cars can move has a radius r1 = 106 m, while the largest has a radius r2 = 153 m, as the drawing illustrates. The height of the outer wall is 18 m. Find the smallest speed at which cars can move on this track without ...
*December 20, 2010 by jessica*

**Physics**

On a banked race track, the smallest circular path on which cars can move has a radius of 119 m, while the largest has a radius 155 m, as the drawing illustrates. The height of the outer wall is 18 m. (a) Find the smallest speed at which cars can move on this track without ...
*October 6, 2012 by Moises*

**physics**

A 1.92 kg cart and a 3.7 kg cart both slide toward each other at 1.34 m/s on an air track. They collide and stick. The combined mass moves at what speed in m/s
*February 6, 2012 by Anonymous*

**Physics**

For a physics lab involving watchnig a gldier move down an air track with uniform acceleration, and recording the results in a table then graphing the results,do I include that "Observations were held and results were recorded in a table. Two graphs, one position-time and one ...
*March 6, 2011 by Emily*

**Physics**

As two trains move along a track, their conductors suddenly notice that they are headed toward each other. The figure below gives their velocities v as functions of time t as the conductors slow the trains. The slowing processes begin when the trains are 240 m apart. What is ...
*September 7, 2011 by Natalie*

**Physics**

The air tracks tend to move slightly when a glider rebounds from the lower bumper of the air track. How might this movement affect the results obtained in this experiment? Answer No effect on the results of that run. The glider may accelerate less on the next run because it ...
*September 10, 2012 by beanstalk1*

**English**

Q) At a hotdog cart, can we buy hotdogs, pretzels and drinks? Do you have drink carts or pretzel carts separately?
*June 3, 2013 by rfvv*

**physics-momentum HELP PLEASE tesst in two days**

A student flings a 2.3g ball of putty at a 225g cart sitting on a slanted air track that is 1.5m long. The track is slanted at an angle of 25 degrees with the horizontal. If the putty is travelling at 4.2 m/s when it hits the cart, will the cart reach the end of the track ...
*May 3, 2011 by Syed*

**Physics**

I'm not really sure on this one... Am i correct? A maglev train requires which of the following? A. track and the train must have the different magnetic poles B. track and the train must have the same magnetic poles <--- C. magnetic poles must alternate between the track ...
*June 10, 2014 by Me and I*

**Physics**

Two cars travel at the same speed, so that they move 105 km in one hour. One car, a sleek sports car, has a motor that delivers only 35 kW of power at this speed. The other car needs its motor to produce 65 kW to move the car this fast. The difference is caused by air ...
*August 18, 2011 by Gullu*

**Physics**

Two cars travel at the same speed, so that they move 105 km in one hour. One car, a sleek sports car, has a motor that delivers only 35 kW of power at this speed. The other car needs its motor to produce 65 kW to move the car this fast. The difference is caused by air ...
*August 18, 2011 by Gullu*

**Physics (Algebra-based)**

A block starts at rest and slides down a frictionless track except for a small rough area on a horizontal section of the track.It leaves the track horizontally, flies through the air, and subsequently strikes the ground. gravity= 9.81 m/s^2. height1=4.1m---- is initially ...
*April 6, 2013 by Becky*

**Physics**

A ball of mass 522 g starts at rest and slides down a frictionless track, as shown below. It leaves the track horizontally, striking the ground a distance x = 0.81 m from the end of the track after falling a vertical distance h2 = 1.03 m from the end of the track. (a) At what...
*October 14, 2012 by Angela*

**physcis**

On a banked race track, the smallest circular path on which cars can move has a radius of 113 m, while the largest has a radius of 160 m, as the drawing illustrates. The height of the outer wall is 14.4 m. Find (a) the smallest and (b) the largest speed at which cars can move ...
*February 24, 2011 by john *

**Physics**

On a banked race track, the smallest circular path on which cars can move has a radius of 112 m, while the largest has a radius of 165 m, as the drawing illustrates. The height of the outer wall is 18 m. Find (a) the smallest and (b) the largest speed at which cars can move on...
*October 25, 2011 by Anonymous*

**Physics**

On a banked race track, the smallest circular path on which cars can move has a radius of 113 m, while the largest has a radius of 164 m, as the drawing illustrates. The height of the outer wall is 17.4 m. Find (a) the smallest and (b) the largest speed at which cars can move ...
*March 20, 2012 by Anonymous*

**Physics**

On a banked race track, the smallest circular path on which cars can move has a radius of 113 m, while the largest has a radius of 164 m, as the drawing illustrates. The height of the outer wall is 17.4 m. Find (a) the smallest and (b) the largest speed at which cars can move ...
*March 20, 2012 by Anonymous*

**physics**

On a banked race track, the smallest circular path on which cars can move has a radius of 105 m, while the largest has a radius of 175 m, as the drawing illustrates. The height of the outer wall is 18.7 m. Find (a) the smallest and (b) the largest speed at which cars can move ...
*October 9, 2012 by ben*

**physics**

A 350-g air track cart on a horizontal air track is attached to a string that goes over a pulley with a moment of inertia of 6.00 × 10-6 kg·m2 and a radius of 1.35 cm. The string is pulled vertically downward by a force of 2.50 N. What is the acceleration of the cart?
*April 11, 2013 by Anonymous*

**last physics problem!**

A ball of mass 522 g starts at rest and slides down a frictionless track, as shown below. It leaves the track horizontally, striking the ground a distance x = 0.93 m from the end of the track after falling a vertical distance h2 = 1.18 m from the end of the track. (a) At what ...
*April 15, 2010 by brittany*

**Math**

A running track is designed with two semicircular ends and two parallel straightaways. If the inner perimeter of the track is to be exactly 400 meters, what are reasonable dimensions for the radius and straightaway of the track? draw picure, justify answer
*April 22, 2010 by Mary*

**general physics**

On a banked race track, the smallest circular path on which cars can move has a radius of 119 m, while the largest has a radius of 159 m, as the drawing illustrates. The height of the outer wall is 16.8 m. Find (a) the smallest and (b) the largest speed at which cars can move ...
*July 8, 2013 by tcc*

**Physics **

Two blocks move along a linear path on a nearly frictionless air track. One block, of mass 0.107 kg, initially moves to the right at a speed of 4.70 m/s, while the second block, of mass 0.214 kg, is initially to the left of the first block and moving to the right at 6.80 m/s. ...
*October 18, 2012 by koko*

**Physics**

A block starts at rest and slides down a fric- tionless track. It leaves the track horizontally, flies through the air, and subsequently strikes the ground.What is the speed of the ball when it leaves the track? The acceleration of gravity is 9.81 m/s2 .
*January 16, 2012 by Olivia*

**PHYSICS WORK PROBLEM due tonight!! please help!**

A ball of mass 522 g starts at rest and slides down a frictionless track, as shown below. It leaves the track horizontally, striking the ground a distance x = 0.93 m from the end of the track after falling a vertical distance h2 = 1.18 m from the end of the track. (a) At what ...
*April 15, 2010 by brittany*

**math**

u know how deka and deci are on the metric scale?well wat if the question is convert 100 dm into (answer)Dm? I assume you are using Dm for decameters. The correct abbr. is da. Here is what I do. kilo hecto deca unit, meter, liter, second, etc deci centi milli Start at deci. We...
*October 29, 2006 by chemiii*

**Physics**

For a winter fair, some students decide to build 30.0- kg wooden pull-carts on sled skids. If two 90.0- kg passengers get in, how much force will the puller have to exert to move the pull-cart? The coefficent of maximum static friction between the cart and the snow is 0.15.
*October 27, 2009 by Tony*

**physics**

When two objects move uniformly toward each other, they get 3.0 m closer each second, and when they move uniformly in the same direction with their original speeds, they get 1.0 m closer each 17 seconds. What is the speed (in meters/second) of the faster moving object?
*February 21, 2013 by Cristian*

**physics**

Two fan carts with different fan speeds and different accelerations are started from rest some distance from one another. Cart A begins at position 0 with a velocity of zero and an acceleration of aA to the right. Cart B begins at position xB with a velocity of zero and an ...
*November 20, 2010 by Punita*

**Geology**

I know that Divergent margins, also known as rifting or spreading centers, happen when two plates move away from one another. Convergent margins happen when two plates move towards on another. The last transform faults happen when plates move past each other grinding against ...
*October 3, 2010 by Lynn*

**Physics**

Each of two runners at either end of a 1907 m straight track jogs toward the other at a constant 4.00 m/s. Suppose that a fly were to go back and forth, essentially without a pause, from one runner to the other at an average speed of 13 m/s. How far will it have traveled in ...
*August 25, 2010 by Ryan*

**Math**

In chess, a knight can move either two squares horizontally plus one vertically or two squares vertically plus one horizontall. a) If a knight starts from one corner of a standard 8*8 chessboard, how many different squares could it reach after i) one move? ii) two moves? iii) ...
*November 4, 2009 by May*

**Physics**

7. Two metal spheres are suspended from insulating threads. A negatively charged rod is brought near these spheres. One sphere is pushed away from the rod and the other is attracted toward it. Describe the behavior of the spheres. SOLUTION: ----> {Metal sphere attracted to ...
*May 29, 2009 by sally*

**physics**

Two Carts have a perfectly inelastic collision. Cart A has mass 47.2 kg and velocity 6.33 m/s directed north immediately before the collision. Cart B has mass 41.1 kg and velocity 4.4 m/s directed west immediately before the collision. What is the speed of the two carts, stuck...
*July 30, 2012 by Mike*

**physics**

A block of mass 0.570 kg is pushed against a horizontal spring of negligible mass until the spring is compressed a distance x. The force constant of the spring is 450 N/m. When it is released, the block travels along a frictionless, horizontal surface to point B, the bottom of...
*March 2, 2009 by Jessi*

**Physics**

Two stunt drivers drive directly toward each other. At time t=0 the two cars are a distance D apart, car 1 is at rest, and car 2 is moving to the left with speed v_0. Car 1 begins to move at t=0, speeding up with a constant acceleration a_x. Car 2 continues to move with a ...
*May 26, 2009 by RJ*

**Physics**

A line of identical train cars collide inelastically. (They couple.) Three carts are initially coupled and moving at speed v: the rest are stationary. The three moving cars hit a fourth, then those four hit a fth, and so on. This continues until the speed of the "collection" ...
*November 1, 2012 by NIck*

**Physics **

A cart of apples is rolling toward you in the street. It’s velocity is 2m/s. Its total mass is 50kg. You are running toward the cart of apples (hint your velocity is opposite direction of the carts velocity). You have a mass of 45kg. What velocity must you be running at to ...
*June 26, 2011 by Tina*

**physics**

carts of a roller coaster are travelling 5m/s over the top of the first hill. If there is no energy loss due to friction and the hill is 50m high,what speed will the carts have at the bottom
*July 1, 2010 by seth*

**physics**

carts of a roller coaster are travelling 5m/s over the top of the first hill. If there is no energy loss due to friction and the hill is 50m high,what speed will the carts have at the bottom
*July 1, 2010 by seth*

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