Friday

March 27, 2015

March 27, 2015

Number of results: 39,948

**Physics**

A ski trail makes a vertical descent of 78.0 m (as shown in the figure below ). A novice skier, unable to control his speed, skis down this trail and is lucky enough not to hit any trees. If the skier is moving at 12.1 m/s at the bottom of the trail, calculate the total work ...
*March 8, 2010 by Sarah*

**algebra**

If a pine cone is projected upward at a velocity of 16ft/sec from the top of a 96-foot pine tree, then how long does it take to reach the earth?
*June 13, 2012 by Anonymous*

**physics**

a foot ball is thrown upward with an angle of 30 degree with respect to the horizantal .to throw a 40meter pass what must be the intial speed of the ball?
*October 17, 2014 by ayan*

**Physics**

Your friend's car is parked on a cliff overlooking the ocean on an incline that makes an angle of 16.9° below the horizontal. The brakes fail, and the car rolls from rest down the incline for a distance of 36.3 m to the edge of the cliff, which is 61.1 m above the ocean, and, ...
*January 28, 2012 by Matthew*

**physics**

a blockof mass 100 kg tied to a donkey that moves with constant accelaration of 20centimeter over second squared up a 30 degrees incline. what is the force with which the donkey pulls on the block parallel to the incline? The coefficient of kinetic friction between the kinetic...
*May 4, 2010 by dai*

**physics**

A ball is thrown vertically upward with a speed of 26.8 m/s from a height of 1.9 m. How long does the ball take to hit the ground after it reaches its highest point?
*September 28, 2011 by Kelsi*

**physics**

A diver springs upward with an initial speed of 2.58 m/s from a 3.0-m board. (a) Find the velocity with which he strikes the water.(b) What is the highest point he reaches above the water?
*January 28, 2014 by Anonymous*

**Physics**

A stone is thrown vertically upward with a speed of 18.0 m/s. (a)How fast is it moving when it reaches a height of 11.0 m? (b)How long is required to reach this height ? (c)Why are there two answers to (b)?
*August 2, 2014 by Anonymous*

**physics**

A centrifuge is a common laboratory instrument that separates components of differing densities in solution. This is accomplished by spinning a sample around in a circle with a large angular speed. Suppose that after a centrifuge in a medical laboratory is turned off, it ...
*November 3, 2011 by marie*

**physics**

A harmonic wave is traveling along a rope. The oscillator that generates the wave completes 40.0 vibrations in 30.0 s. A given crest of the wave travels 425 cm along the rope in a period of 10.0 s.What is the wavelength? Show all of your work plz. i know the answer is 0.319 m ...
*May 11, 2011 by Anonymous*

**Calculus, AntiDerivatives**

I need help with this problem: A car traveling at 43 ft/sec decelerates at a constant 5 ft per second squared. How many feet does the car travel before coming to a complete stop? I'm not sure where to start, i know how to find antiDerivatives, but i dont even know the equation...
*November 23, 2006 by Mike*

**Physics**

The Speed of train is reduced from 60km/h at the same time as it travels a distance of 450 m, If the retardation is uniform , find how much further it will travel (approx) before coming to rest? Answer is 30m but how? See my solution , i solved it in two ways . 1: Vi=16 m / s...
*October 28, 2014 by Shahab Mirza*

**physics**

A car sits in an entrance ramp to a freeway, waiting for a break in the traffic. The driver sees a small gap between a van and an 18-wheel truck and accelerates with constant acceleration along the ramp and onto the freeway. The car starts from rest, moves in a straight line, ...
*September 29, 2013 by Emma*

**geometry**

i don't get how to do slope i know the equation but it never comes out right...do you have any advice to help me b/c i ask some people and they don't get it either and we have a test tomorrow? CAn you give us a specific example? Well slope is very simple.All you have to do is ...
*October 9, 2006 by megg*

**Algebra**

I have an assignment that asks me to write an equation in slope-intercept, point-slope, or standard form for the information given and to explain why the chosen form would be best. Below is the information given. 1. passing through (-1,4) and (-5,2) 2. that has slope 2 and y ...
*January 2, 2014 by Anonymous*

**physics**

A person is riding a bicycle, the wheels of a bicycle have an angular velocity of +20.5 rad/s. Then, the brakes are applied. In coming to rest, each wheel makes an angular displacement of +12.0 revolutions. (a) How much time does it take for the bike to come to rest? (b) What ...
*November 10, 2010 by sean*

**physics**

A person is riding a bicycle, the wheels of a bicycle have an angular velocity of +24.0 rad/s. Then, the brakes are applied. In coming to rest, each wheel makes an angular displacement of +16.0 revolutions. (a) How much time does it take for the bike to come to rest? s (b) ...
*November 17, 2011 by Taylor*

**bobpursley**

I had ask this question of you before but I didn't understand your response. Can you please clearify further. The question is: a skateboarder moving at v = 5 m/s along a horizontal section of a track that is slanted upward by 48° above the horizontal at its end, which is h = 0...
*February 27, 2007 by Mary*

**physics**

A skier of mass 70kg is pulled up a slope by a motor-driven cable. The acceleration of gravity is 9.8m/s^2. How much work is required to pull him 60m up a 30.7º slope (frictionless) at a constant speed of 3 m/s? answer in units of kJ. In this question, I think I gotta use mgh ...
*September 17, 2006 by puff puff*

**Physics**

A solid ball and a hollow ball, each with a mass of 2 kg and radius of 0.1 m, start from rest and roll down a ramp of length 2 m at an incline of 34°. An ice cube of the same mass slides without friction down the same ramp. What is the speed of the solid ball at the bottom of ...
*June 18, 2012 by James*

**physics**

A mass of 11 kg is placed on a frictionless incline which is inclined at an angle of 69 degrees above the horizontal. It is held in place by a rope which is attached to a wall at the top of the incline. The rope is angled 13 degrees above the direction parallel to the incline...
*October 6, 2011 by Kaleigh*

**PHYSICS HELP PLEASE !!!!!**

A 21 kg object is placed on an incline with friction. The incline is raised slowly from zero degrees and at 60.71 degrees, the object begins to slide down the incline. What is the coefficient of static friction? Be as accurate as possible with your answer and be sure to enter ...
*October 25, 2011 by Amanda *

**PHYSICS HELP PLEASE !!!!!**

A 21 kg object is placed on an incline with friction. The incline is raised slowly from zero degrees and at 60.71 degrees, the object begins to slide down the incline. What is the coefficient of static friction? Be as accurate as possible with your answer and be sure to enter ...
*October 25, 2011 by Amanda *

**PHYSICS**

A 16 kg block slides down a 30 degree frictionless incline where it is stopped by a strong Hook's Law spring at the bottom. The spring constant is k = 9.8 x10^4 N/m. If the block slides 9 m from the point where it was released (from rest) to the point where it comes to rest ...
*April 20, 2010 by Jason*

**physics**

A 75g person on skis is going down a hill sloped at an angle 30.the coefficient of kinetic friction between the skis and the snow is 0.15.how fast is the skier going 10s after starting from rest?
*November 6, 2011 by Anonymous*

**pysics.**

What is the minimum work needed to push a 975 kg car 230 m up along a 17.5° incline? Assume the effective coefficient of friction retarding the car is 0.20?
*October 12, 2009 by Joe*

**AP Physics**

a 45 kg object slides down an uneven frictionless incline from rest without rotating. What is its speed after it travels 2.5 meters vertically
*October 30, 2010 by Asim*

**physics**

If 4.5 kg object is sitting at rest on a 30 degree incline that has a coefficient of static friction of .19, what is the net force down the plane? Does it start sliding?
*February 19, 2013 by Aaron*

**Grammar **

Circle the adjectives that can be used with the nouns on the right . 1)upward 2)growing 3)recent (Problem) 1)steady 2)severe 3)reliable. (Supply) 1)available 2)increasing 3)public. (Concern) 1)immediate 2)effective 3)sufficient. (Solution) 1)affordable 2)rising 3)rapid. (...
*June 3, 2013 by Maryam*

**Physics**

A toy slides down an inclined plane which makes an angle of 60 degrees with the horizontal. It starts from rest and achieves a final velocity of 8 m/s in 5 seconds at the bottom of the plane. a. What is the acceleration down the plane? b. What is the distance along the plane ...
*November 2, 2013 by Tsunayoshi*

**physics**

A 650kg elevator starts from rest. It moves upward for 3s with constant acceleration until it reases its cruising speed, 1.75m/s. (a) what is the average power of the elevator motor during this period? (b) How does this compare with its power during an upward cruise with ...
*October 28, 2007 by Anonymous*

**PHYSICS**

An entertainer juggles balls while doing other activities. In one act, she throws a ball vertically upward, and while it is in the air, she runs to and from a table 5.50m away at a constant speed of 2.50m/s, returning just in time to catch the falling ball. (a)With what ...
*July 13, 2010 by Francis*

**physics**

Search: A person is riding a bicycle, the wheels of a bicycle have an angular velocity of +18.0 rad/s. Then, the brakes are applied. In coming to rest, each wheel makes an angular displacement of +11.0 revolutions. How much time does it take for the bike to come to rest? What ...
*February 25, 2011 by Taylor*

**math**

jim's 10-foot garage casts a 7-foot shadow. his house has a 17.5-foot shawdow. how tall is his house
*May 23, 2011 by selena*

**physics**

A 23.0 kg box is released on a 39.0° incline and accelerates down the incline at 0.268 m/s2. Find the friction force impeding its motion.
*March 1, 2011 by md8*

**Scientific studies**

A stone is thrown vertically upward with a speed of (a) How fast is it moving when it reaches a height of 11.0 m? (b) How long is required to reach this height? (c) Why are there two answers to (b)?
*February 17, 2010 by Aly*

**Physics**

A rok is thrown 24 meters/sec upward and lands in a 10 meter deep hole. How long is the rock in the air until it reaches the bottom of the hole?
*August 26, 2012 by Alex*

**physics**

A ball of mass .15 kg and a radius of .24 m is at the top of a 3.5 m tall hill with a 25 degree incline. What is the velocity of the ball as it reaches the bottom of the hill if it (a) rolls without slipping? (b)slips without rolling?
*October 28, 2010 by Anonymous*

**Physics**

A physics book slides off a horizontal tabletop with a speed of 1.10m/s . It strikes the floor in 0.350s . Ignore air resistance. The height of the tabletop above th floor is .600m.The horizontal distance from the edge of the table to the point where the book strikes the floor...
*October 15, 2010 by Kara*

**Physics**

A physics book slides off a horizontal tabletop with a speed of 1.10m/s . It strikes the floor in 0.350s . Ignore air resistance. The height of the tabletop above th floor is .600m.The horizontal distance from the edge of the table to the point where the book strikes the floor...
*October 15, 2010 by Sam*

**physics**

There is a block on top of an incline plane. The incline is going down to the right. The angle to the right of the 90 is 36.9 degree. There is a force pushing on it from the left. Find the applied force (F) needed to prevent the block from sliding down the incline; ignore ...
*June 26, 2011 by k9*

**Geometry**

I need help in this problem: A 14-foot ladder is leaning against a house so that its top touches the top of the wall. the bottom of the ladder is 8 feet away from the wall. which of these can be used to find the height of the wall? A. in a right triangle with 14-foot leg and ...
*March 27, 2014 by Alex*

**PHYSICS**

An electron is initially at rest in, but not on the axis of, a solenoid that is carrying a steady current I directed as shown in the cross section below (counterclockwise). The electron is initially at rest on the -x axis. The current in the solenoid is suddenly increased to ...
*December 17, 2013 by asha*

**Physics**

A block with mass m = 2.00kg is placed against a spring on a frictionless incline with angle (30 degrees). (The block is not attached to the spring.) The spring with spring constant k = 19.6 N/cm, is compressed 20.0 cm and then released. a.) What is the elastic potential ...
*October 31, 2010 by Scott*

**physics**

You're quietly sitting by a street one day, enjoying the sun, when you notice a speeding car traveling at 20 m/s down the street. The driver notices that there's a stop sign in the street and hits the brakes 40 m before the stop sign, coming to a stop right at the sign itself...
*May 20, 2013 by hemant*

**Physics**

A small block slides along a track from one level to a higher level, by moving through an intermediate valley (see Figure). The track is frictionless until the block reaches the higher level. There a frictional force stops the block in a distance d. Assume that the block's ...
*December 26, 2013 by George*

**physics**

A rock is given a KE of 2.00*10^4 J when it is launched vertically upward. If the rock reaches a height of 50m determine the mass of the rock.
*January 6, 2015 by moooose*

**physics**

Starting from rest, a crate of mass m is pushed up a frictionless slope of angle (theta) by a horizontal force of magnitude F. Use work and energy to find an expression for the crate's speed v when it is at height h above the bottom of the slope. Express your answer in terms ...
*November 10, 2012 by Ohimai*

**Physics**

Mass 1 with a mass of 28.5 kg starts at rest at the top of a frictionless from a height of 17 meters. It then slides down the incline and moves over a horizontal frictionless surface and collides inelastically (head on) with mass 2 which is of unknown mass. After the ...
*November 15, 2012 by Chelsea*

**physics **

What is the minimum work needed to push a 950 kg car 890 m up along a 8.0 degree incline? Assume the effective coefficient of friction retarding the car is 0.22.
*October 10, 2011 by Luke *

**physics**

You have designed a rocket to be used to sample the local atmosphere for pollution. It is fired vertically with a constant upward acceleration of 17 m/s2. After 20 s, the engine shuts off and the rocket continues rising (in freefall) for a while. (Neglect any effects due to ...
*August 9, 2014 by Danielle*

**College Physics**

A block with mass m = 2.00kg is placed against a spring on a frictionless incline with angle (30 degrees). (The block is not attached to the spring.) The spring with spring constant k = 19.6 N/cm, is compressed 20.0 cm and then released. a.) What is the elastic potential ...
*October 31, 2010 by Scott*

**physics**

A m = 2.51 kg mass starts from rest and slides a distance d down a frictionless theta = 34.6° incline. While sliding, it comes into contact with an unstressed spring of negligible mass. The mass slides an additional 0.220 m as it is brought momentarily to rest by compression ...
*October 31, 2009 by Anonymous*

**algebra 2**

A skier has decided that on each trip down a slope, she will do 2 more jumps than before. On her first trip she did 6 jumps. Derive the sigma notation that shows how many total jumps she attempts from her fourth trip down the hill through her twelfth trip. Then solve for how ...
*October 20, 2014 by Please Help Me*

**Math**

A skier has decided that on each trip down a slope, she will do 2 more jumps than before. On her first trip she did 6 jumps. Derive the sigma notation that shows how many total jumps she attempts from her fourth trip down the hill through her twelfth trip. Then solve for how ...
*October 20, 2014 by Take a look Please*

**physics**

a block moves up 45degree incline w/ constant speed under the action of a force of 15n applied parallel to the incline.If the coefficient of kinetic friction is 0.3, determine the weight of the block and minimum force required to allow the block to move down the incline at ...
*March 6, 2014 by kmae*

**Physics**

A car is parked on a cliff overlooking the ocean on an incline that makes an angle of 22◦ below the horizontal. The negligent driver leaves the car in neutral, and the emergency brakes are defective. The car rolls from rest down the incline with a constant acceleration ...
*October 23, 2013 by John*

**physics**

Fred the otter climbed to the top of an inclined plane. His friend, Giselle the giraffe, suggested that he was so small that gravity would ignore him and he would be unable to slide down. "On the contrary", said Fred, "Since this slope makes an angle of 48.4 degrees with the ...
*November 13, 2012 by swag*

**physics**

Fred the otter climbed to the top of an inclined plane. His friend, Giselle the giraffe, suggested that he was so small that gravity would ignore him and he would be unable to slide down. "On the contrary", said Fred, "Since this slope makes an angle of 48.4 degrees with the ...
*November 13, 2012 by zach*

**physics**

An ambulance is traveling east at 60.7 m/s. Behind it there is a car traveling along the same direction at 32.3 m/s. The ambulance driver hears his siren at a frequency of 521 Hz. At what frequency does the driver of the car hear the ambulance’s siren? The velocity of sound in...
*January 26, 2014 by Need answer by 10pm*

**Physics**

"An alpha particle (a helium nucleus) is traveling along the positive x-axis at 1 250 m/s when it enters a cylindrical tube of radius 0.500 m centered on the x axis. Inside the tube is a uniform electric field of 4.50 X 10^-4 N/C pointing in the negative y direction. How far ...
*February 21, 2011 by Anonymous*

**science**

A ? is a channel along which water is continually flowing down a slope
*February 27, 2009 by alison*

**11th grade**

A 16.0 kg box is released on a 39.0° incline and accelerates down the incline at 0.267 m/s2. Find the friction force impeding its motion
*November 27, 2010 by Anonymous*

**Physics**

Determine the acceleration of a 1500 kg automobile that rolls down an incline of 30° from the horizontal if a coefficient of friction between the tires and the incline is 0.12
*June 10, 2014 by Corey Brown*

**math**

can someone help me set this up so i can solve. Problem #3 the posted speed limit for trucks along national route 3 is 35 MPH. how many kilometers will a convoy cover after 3.7 hours on the road traveling at the posted Problem # 5 IF the formula to figure volume for a cubic ...
*March 26, 2007 by jasmine20*

**Analytic geometry - finding point by intersect lin**

I have a triangle ABC. The slope of AB is -1/ab, the slope of AC is -1/ac, and the slope of BC is -1/ac. My question is, I have 3 lines: Altitude from A to BC, altitude from B to AC, and altitude from C to AB. I know their slope because it is just -1/slope. But I want to know ...
*March 5, 2013 by Knights*

**Physics**

a 300kg piano is being lifted at a steady speed from ground level straight up to an apartment 10.0m above ground. The crane that is doing the lifting produces a steady power of 400 W. How much time does it take to lift the piano?
*November 25, 2008 by Delli*

**physics**

a 200 kg block was moved along an inclined plane to a height of 10m. during this process 3000J of energy was lost due to friction. a. calculate the efficiency of the inclined plane. b. what would the efficiency of the simple machine be if the incline were frictionless? c. how ...
*January 31, 2009 by april*

**Physics**

A 2 kg ball is rolled down a hill 25 m tall. When it reaches the bottom of the hill it is traveling at 15.1 m/s. How much energy was dissipated due to friction?
*March 4, 2014 by Tyler*

**Physics**

In the flying ski jump, a skier acquires a speed of about 62 mph (this ended up being 27.7 m/s) by racing down a steep hill and then lifts off into the air off of a horizontal ramp. Beyond the ramp, the ground slopes at an angle of 45 degrees. a) Predict the distance downslope...
*September 6, 2013 by Lawon*

**physics**

A 40-kg sled rests at the top of a 34˚ incline that is 500 m long. If the coefficient of friction is 0.2, what will be the speed at the bottom of the slope? The 40-kg mass includes the mass of the person on the sled.
*March 31, 2012 by rahul patel*

**physics**

a 0.40kg ball is thrown vertically upward with a speed of 30m/s. The ball reaches a height of 40m. What is the energy dissipated due to air friction?... please help i don't know what to do:(
*April 7, 2009 by julie*

**Physics**

Two cars start from rest at a red stop light. When the light turns green, both cars accelerate forward. The blue car accelerates uniformly at a rate of 3.6 m/s2 for 4.5 seconds. It then continues at a constant speed for 7.3 seconds, before applying the brakes such that the car...
*January 6, 2014 by Shreyas*

**math**

a 4 foot by 8 foot panel, the top of wich is located 18 foot below the water line on a dam wall is subject to how much forec? ( assume the panel is oriented with the long side horizontal)
*September 29, 2011 by Anonymous*

**College Physics I**

A helicopter traveling upward at 120 m/s drops a package from a height of 500 meters. To the nearest second how long does it take to hit the ground?
*August 26, 2012 by Dylan*

**Math**

A carpenter purchased 25.25 feet of hardwood at $25.20 per foot, and 3 types of trim molding: 2.6 feet $1.90 per foot, 2.8 feet at $3.90 per foot, 7.5 feet at $4.90 per foot. How much did he spend on this purchase?
*March 2, 2010 by Nikki*

**physics**

I am having so much trouble with this D: A rocket is traveling straight up from its launch pad. An observer 5.00 km from the launch pad notices that at one instant, she must tilt her telescope 45.0 degrees upward to see the rocket. 10.0 seconds later, she must tilt her rocket ...
*August 25, 2011 by Jasmine*

**Physics**

A 200 toy car is placed on a narrow 64--diameter track with wheel grooves that keep the car going in a circle. The 1.5 track is free to turn on a frictionless, vertical axis. The spokes have negligible mass. After the car's switch is turned on, it soon reaches a steady speed ...
*November 7, 2011 by Hsieh*

**PHYSICS**

A 62 kg water skier, moving at 14 m/s , lets go of the towline. Momentum= 868 kgm/s Impulse= -868 Ns c.If the water exerts an average force of -275 N on the skier, how long must the force act? 3.16 s d. How far does she travel during this time? I'm guessing "this time" ...
*January 6, 2012 by Anon*

**physics**

A body is thrown vertically upward from the top of the cliff 50m high. Has the body reaches the ground in 10. What is the initial velocity of body?
*August 21, 2010 by Anonymous*

**physics**

A body is thrown vertically upward from the top of the cliff 50m high. Has the body reaches the ground in 10. What is the initial velocity of body?
*August 21, 2010 by Anonymous*

**Physica**

A man of 60 kg standing on a floor at rest. The normal force exerted by the floor on the man is: A)588 N upward B) 120 N downward C) 60 N downward D) 588 N downward E) 60 N upward
*July 11, 2012 by Q99*

**Physics.**

A mass of m1 = 12 kg is placed on an incline with an inclination angle of 50 degrees, a coefficient of kinetic friction of 0.16, and a coefficient of static friction of 0.89. m1 is tied to a rope which runs parallel to the incline and runs over a pulley to a hanging mass of m2...
*October 21, 2011 by Amanda *

**Algebra HELP!!**

Write the equation of the line that contains the points (2, 2) and (-3, 12). Here is part of the answer. Can you identify the missing part? y = -2x + ___ I think it's 12 You've got the slope so use y-y1=m(x-x1) where (x1,y1) is either point. If you use (2,2), then y-2=-2(x-2) ...
*October 11, 2006 by Margie*

**Physics**

A car traveling 56 km/h is 21.0 m from a barrier when the driver slams on the brakes. The car hits the barrier 2.17 s later. a)What was the car's constant deceleration before impact? b)How fast was the car traveling at impact?
*September 2, 2009 by Nick*

**Physics**

A block initially at rest, slides down from the top of an inclined plane 30degrees above the horizontal. The plane is 100feet long and frictionless. what distance will it travel on a frictionless horizontal surface at the foot of the plane 6seconds after it has started from rest?
*January 12, 2015 by Albert*

**physics**

There is a 0.225 T magnetic field directed along the +x axis and a field of unknown magnitude along the +y axis. A particle carrying a charge of 7.20 10-5 C experiences a maximum force of 0.455 N when traveling at a speed of 2 104 m/s through the region where the fields are. ...
*February 10, 2008 by rick*

**Physics**

A cylinder and a solid disc are released from rest from the top of a ramp.They roll down the hill without slipping. Which statement iscorrect? a. The cylinder reaches the bottom first b. The disc reaches the bottom first c. They both reach the bottom at the same time d. Could ...
*April 21, 2009 by Sandy*

**Physics**

A semitrailer is coasting downhill along a mountain highway when its brakes fail. The driver pulls onto a runaway-truck ramp that is inclined at an angle of 10.0° above the horizontal. The semitrailer coasts to a stop after traveling 137 m along the ramp. What was the truck's ...
*October 20, 2012 by Elizabeth*

**math**

A farmer is planting squashplants that need 2 3/8 feet to spread out. he has an area along a fence that is 20 feet long. Round the amount of space the squash plants need to the nearest 1/2 foot. How many squash plants can the farmer grow along the fence?
*January 26, 2010 by Anonymous*

**physics**

A block slides down a 10 angled incline at a constant speed. what is the coefficient of sliding friction between the blocks surface and the incline?
*November 8, 2008 by kim*

**physics**

A 5-kg box is released on a 30 degree incline and accelerates down the incline at 2.79 m/s^2. To the nearest tenth of a Newton, what is the friction force impeding its motion?
*November 16, 2012 by Danielle*

**Math**

Starting with the formula mg sin A = umg cos A, you can derive tan A = u to find the angle A of an incline and the coefficient of friction u of objects on the incline.
*October 13, 2014 by TeeKay*

**Math (trig)**

A force of 35lb is required to hold a 72lb toolbox on an incline. What angle does the incline make with the horizontal? Please help me set this up.
*November 23, 2014 by Alexis*

**trig**

I need help setting this problem up. A force of 36lb is required to hold a 70lb toolbox on an incline. What angle does the incline make with the horizontal?
*November 23, 2014 by IHS*

**Physics**

A 5 kg ball rolls down a 10meter long slope. Ignoring friction, how fast will the ball be rolling when it reaches the bottom?
*October 21, 2013 by Nina*

**Phisics (Urgent)!!!!!!!!!!!!!!!!!!!!!!**

A small block of mass m=1 kg glides down (without friction) a circular track of radius R=2 m, starting from rest at height R. At the bottom of the track it hits a massless relaxed spring with spring constant k= 9 N/m, which starts to be compressed as the block continues to ...
*January 12, 2014 by Anonimus*

**Physics**

A motor cyclist travelling at 12m/s decelerate at 3m/s(squared)? How far does he travel while coming to rest?
*March 16, 2015 by Shweta Chand*

**Pre-Calculus**

help please Identify the slope and intercept of the following linear equation. y=3/7x-5 Slope: 3/7; intercept: 5 Slope: -5; intercept: 3/7 Slope: 5; intercept: 3/7 Slope: 3/7; intercept: -5
*September 24, 2014 by Anonymous*

**physics**

- A 1600-KG ELEVATOR accelerates downward at 2.00 m/s2 starting from rest. how much work does gravity do on the elevator? b) how much does tention in the elevator cable do on the elevator? c) use the work kinetic energy theorem to find the kenetic energy of the elevator as it ...
*November 29, 2010 by Anonymous*

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