Thursday

September 3, 2015
Number of results: 31,176

**physics**

A balloonist drops an apple weighing 1.5 N over the side of the balloon's gondola. As it falls and increases speed, the drag force from the air upward on it increases. When the upward force is 0.7 N, what is the direction and magnitude of the net force on the apple?
*October 25, 2012 by anon*

**physics**

Three identical balls are thrown from the top of a building, all with the same initial speed. The first is thrown horizontally, the second at some angle above the horizontal, and the third at some angle below the horizontal. Neglecting air resistance, rank the speeds of the ...
*October 5, 2010 by matt *

**physics**

A passenger on a stopped bus notices that rain is falling vertically just outside the window. When the bus moves with constant velocity, the passenger observes that the falling raindrops are now making an angle of 18 with respect to the vertical. What is the ratio of the speed...
*September 5, 2011 by cassie*

**Physics**

A startled armadillo leaps upward rising .536 m in teh first .197 s. What is its initial speed as it leaves the ground? What is its speed at the height of .536m? How much higher does it go?
*September 9, 2007 by Kristen*

**physics**

A startled armadill leaps upward rising .536 m in teh first .197 s. What is its initial speed as it leaves the ground? What is its speed at the height f .536m? How much higher does it go?
*September 9, 2007 by Kristen*

**College Physics**

A projectile is fired at an upward angle of 55.0 degrees from the top of a 230m cliff with a speed of 180m/s.What will be its speed when it strikes the ground below? (Use conservation of energy.)
*February 25, 2010 by Sandy*

**Physics **

A startled armadillo leaps upward, rising 0.644 m in 0.170 s. a. What is its initial speed? b. What is its speed at this height? c. How much higher does it go? For a. 0 is not the answer and neither is 3.79 m/s (product of .644m*.170s)
*August 30, 2015 by Christy*

**Physics**

A pendulum consists of an object of mass m = 1 kg swinging on a massless string of length l = 258 cm. The object has a speed of 1.6 m/s when it passes through its lowest point. What is the greatest angle with the vertical that the string makes during the motion of the object? ...
*November 17, 2009 by Leah*

**Physics. please help! due tomorrow!**

Let W1 represent the work required to accelerate an object on a frictionless horizontal surface from rest to a speed of v. if W2 represents the work required to accelerate the same object on the same surface from a speed of v to 2v, then which one of the following is the ...
*October 18, 2012 by Matt*

**physics please help!!!!!!**

a mass is thrown vertically upwards with an initial velocity of 30m/s. a second mass is dropped 0.5s later from directly above a height of 60m from the first mass. when do they meet and at what height?
*June 16, 2014 by adii *

**physics**

a rock is thrown at a downwards angle of 15 degrees from the top of a 120 m cliff with a speed of 25 m/s. what will be its speed when it strokes the ground at the base of the cliff? I know to use the conservation of energy but I don't know how to set it up.
*October 9, 2014 by Anonymous*

**Math**

The formula for the velocity of an object is , where v is the velocity of the object, d is the distance traveled, and t is the time elapsed while that distance is traveled. v=d/t distance = speed times time so time in seconds = distance in meters / speed in meters/second we ...
*February 18, 2014 by Dani*

**college physics**

Which of the following statements about special relativity is false? a).The proper length of an object is always larger than the length of the object in a frame where it is moving. b).The proper length of an object depends on the relative speed between the object and an ...
*October 4, 2010 by Lexi*

**Physics**

A 645-kg elevator starts from rest. It moves upward for t = 3.13 s with a constant acceleration until it reaches its constant cruising speed of v = 1.26 m/s. It moved 2.75m during that time. a) What is the average power (W)is delivered by the motor during the initial ...
*December 14, 2011 by Sarah*

**Physics**

A 5 kg mass is thrown up with a velocity of 4 m/s from a height of 30 m onto a spring with a relaxed length of 10 m, and a constant of 400 N/m. What will the maximum compression of the spring be? What will the speed of the object be when the spring is compressed 0.3 m? HERE'S ...
*January 15, 2009 by Bartholomew*

**Physics**

An object at rest accelerates through a distance of 1.5 m at which point the instantaneous velocity of the object is 3.5m/s. Determine: a. The average acceleration of the object b. The time it took the object to travel 1.5m c. The average velocity of the object during this ...
*February 3, 2014 by Tim*

**calculus**

a ball is thrown directly upward with a velocity of 40 feet/seconds. its height in feet after t seconds is given by h(t)equals 40t-16t squared
*October 14, 2010 by gabby pomle*

**calculus**

a ball is thrown directly upward with a velocity of 40 feet/seconds. its height in feet after t seconds is given by h(t)equals 40t-16t squared
*October 14, 2010 by gabby pomle*

**calculus**

a ball is thrown directly upward with a velocity of 40 feet/seconds. its height in feet after t seconds is given by h(t)equals 40t-16t squared
*October 14, 2010 by gabby pomle*

**Pre-Calc/Trig...**

A ball is thrown upward with an initial velocity of 4ft/sec from a height of ten feet. what is the maximum height that the ball will reach. h(t)= -16+vt+s
*October 15, 2014 by Anonymous*

**physics**

A football is thrown with an initial upward velocity component of 13.5 {\rm m}/{\rm s} and a horizontal velocity component of 19.0 {\rm m}/{\rm s}.
*February 2, 2012 by Anonymous*

**physics**

i need a proof/solution to this question. please help. if a ball is trown vertically upward at 80 ft/sec it will continue to rise for approximately how many seconds? how many seconds will the ball return to the ground? thanks!
*September 12, 2013 by Anonymous*

**physics**

A bullet is fired vertically upward from a gun and reaches a height of 7000 ft. Find its initial velocity. How long does it take to reach its maximum height? How long is it in flight?
*September 26, 2014 by Ben*

**college physics**

Three identical balls are thrown from the top of a building, all with the same initial speed. The first is thrown horizontally, the second at some angle above the horizontal, and the third at some angle below the horizontal. Neglecting air resistance, rank the speeds of the ...
*October 5, 2010 by matt *

**Physical Science**

Object A has a mass of 500g and a density of 5.0g/cm^3; object B had a mass of 650g and a density of 5.6g/cm^3. a. Which object will displace the most liquid? b. Could object A and object B be made of the same substance?
*November 13, 2010 by Anonymous*

**Physics**

Consider the following distribution of objects: a 4.00-kg object with its center of gravity at (0, 0) m, a 1.20-kg object at (0, 3.00) m, and a 5.40-kg object at (2.00, 0) m. Where should a fourth object of mass 7.00 kg be placed so that the center of gravity of the four-...
*April 1, 2014 by Joe*

**Physics**

Consider the following distribution of objects: a 4.00-kg object with its center of gravity at (0, 0) m, a 1.20-kg object at (0, 3.00) m, and a 5.40-kg object at (2.00, 0) m. Where should a fourth object of mass 7.00 kg be placed so that the center of gravity of the four-...
*April 2, 2014 by Joe*

**Physics**

Consider the following distribution of objects: a 4.00-kg object with its center of gravity at (0, 0) m, a 1.20-kg object at (0, 3.00) m, and a 5.40-kg object at (2.00, 0) m. Where should a fourth object of mass 7.00 kg be placed so that the center of gravity of the four-...
*April 2, 2014 by Joe*

**Physics**

Consider the following distribution of objects: a 4.00-kg object with its center of gravity at (0, 0) m, a 1.20-kg object at (0, 3.00) m, and a 5.40-kg object at (2.00, 0) m. Where should a fourth object of mass 7.00 kg be placed so that the center of gravity of the four-...
*April 3, 2014 by Joe*

**Calculus**

f a rock is thrown upward on the planet Mars with a velocity of 7 m/s, its height in meters t seconds later is given by y = 7t − 1.86t^2. (Round your answers to two decimal places.) Estimate the instantaneous velocity when t = 1.
*October 8, 2011 by Chris*

**physics**

When a ball is thrown upward, it experiences a downward accelera- tion of magnitude 9.8 m/s 2 , neglecting air resistance. With what velocity must a ball leave a thrower’s hand in order to climb for 2.2 s before stopping?
*January 20, 2015 by Anonymous*

**Physics**

A ball is thrown at an angle of 37.1degrees above the horizontal from a point on the top of a building and 60m from the edge of the building. It just misses the edge of the building and continues on towards the ground. The building is 50m high. At what speed was the ball ...
*March 13, 2008 by Anonymous*

**PHYSICS**

A baseball is thrown with an initial velocity of magnitude v at an angle of 21.8 with respect to the horizontal (x) direction. At the same time, a second ball is thrown with the same initial speed at a different angle A with respect to x. If the two balls land at the same spot...
*February 4, 2011 by Renee*

**Physics**

A horizontal spring is lying on a frictionless surface. One end of the spring is attaches to a wall while the other end is connected to a movable object. The spring and object are compressed by 0.074 m, released from rest, and subsequently oscillate back and forth with an ...
*March 3, 2013 by Tim*

**Physics**

A horizontal spring is lying on a frictionless surface. One end of the spring is attaches to a wall while the other end is connected to a movable object. The spring and object are compressed by 0.076 m, released from rest, and subsequently oscillate back and forth with an ...
*March 4, 2013 by Erick*

**General Physics**

A 0.40 - kg object connected to light spring with a force constant of 19.6 N/m oscillates on a frictionless horizontal surface. If the spring is released from rest, determine the maximum speed of the object.
*November 12, 2009 by Ellen*

**Physics**

Determine the work done by a person when lowering an object of mass 2.6 kg by a distance of 2.4 m. The person applies a force Fext such that the object moves with constant speed, i.e., without acceleration,
*November 17, 2009 by Nikita*

**physics**

1. An object of mass m and initial speed v0 sliding on a horizontal frictionless surface encounters a frictionless ramp. To what vertical height will the object rise before coming to rest?
*November 3, 2010 by derek*

**Tamucc**

A 51kg object connected to a spring of 31N/m spring constant oscillates on a horizontal, frictionless surface with amplitude of 5cm. Find the speed of the object when when its position is 3cm.
*July 7, 2011 by John*

**physics**

An object of mass m moving with initial speed of 15 m/s got an acceleration of 10 m/s^ after a constant force F is applied to it. How long does it take for the object to reach 90 meters from its initial position?
*January 28, 2012 by Abdela said yimer*

**Physics**

A rock is thrown vertically up into the air. It reaches a maximum height 15m above point where it was released. What is its initial velocity? a) 17 m/s b) 26 m/s c) 14 m/s d) 20 m/s I know the answer is a) 17 m/s and I got it wrong thinking it was d) 20 m/s but I can't seem to...
*June 2, 2014 by Marija*

**physics**

an apple is dropped from the top of a building 75 m tall. at the same time a mango is thrown vertically up from the foot of the building with a velocity 30m/s. when and where will the apple and the mango meet?
*September 13, 2012 by Anonymous*

**Physics**

a ball is thrown vertically upwards with a velocity 'u' from the balloon descending with a constant velocity 'v'.. the ball will pass by the balloon after what time?
*January 22, 2010 by Shoaib*

**Physical Science**

A 15 Kg object that is free falling has a total mechanical energy of 13,230 Joules. (A) From what height was the object dropped? (B) What is the velocity of the object when it hits the ground? (C) How long does the object fall?
*January 8, 2011 by JJ *

**Calculus**

the height of an object thrown on the surface of a certin planet is s(t)=80t-16t^2. what is the velocity? what is the acceleration? when is the velocity zero?
*March 14, 2011 by Andrea*

**physic**

please help me.A 5.00 g object moving to the right at +20.0 cm/s makes an elastic head-on collision with a 10.0 g object that is initially at rest. (a) Find the velocity of each object after the collision. 5.00 g object 10.0 g objectt (b) Find the percentage of the initial ...
*October 28, 2009 by Chan*

**math**

If a ball is thrown directly upward with a velocity of 80ft/s, its height (in feet) after t seconds is given by y=80t-16t^2. What is the maximum height attained by the ball?
*December 15, 2007 by lucy*

**physics intro**

A 0.175-lb ball is thrown upward with an initial velocity of 75.0 ft/s. What is the maximum height reached by the ball? Would I need to set it up like √2*75.0*-32.2/0/175?
*October 27, 2014 by Jay*

**Algebra 1**

A ball is thrown into the air with the in initial upward velocity of 60 ft/s. It's height (h) in feet after t seconds is given by the function h=- -16t^2+60t+6. What will the height be at t=3 seconds?
*February 11, 2015 by Steve*

**physics**

A ball is thrown straight upward from ground level with a velocity of 41 m/s How much time passes before the ball strikes the ground? Disregard air resistance.
*May 7, 2015 by angela*

**Applied Physics**

A 10 kilogram object subjected to a 20 Newton force moves across a horizontal frictionless surface in the direction of the force. Before the force was applied, the speed of the object was 2.0 meters/second. When the force is removed the object is traveling at 6.0 meters per ...
*May 14, 2011 by EJ*

**algebra**

5. 16t2 gives the distance in feet a free-falling object falls in t seconds. 16t2 + 10t gives the distance an object falls in t seconds when it is thrown down with an initial velocity of 10 feet per second. Use this polynomials to: a. Find how far a wallet dropped from the ...
*July 3, 2011 by leigh*

**physics**

An unstretched ideal spring hangs vertically from a fixed support. A 0.4 kg object is then attached to the lower end of the spring. The object is pulled down to a distance of 35cm below the unstretched position and released from rest at t=0s. A graph of the subsequent vertical...
*March 28, 2015 by Helly*

**Physics**

An object is moving with constant velocity -->v Which situation is impossible in such a circumstance? 1. One force acts on the object. 2. Three forces act on the object. 3. No forces act on the object. 4. Two forces act on the object. 5. Four forces act on the object.
*June 30, 2013 by Laura*

**physics**

A man running horizontal road with velocity 8 km/hr. Find the rain falling vertically downward direction. When he increases speed to 12 km/hr he find rain drops are falling at an angle 30' with downward vertically. What will be the velocity of rain?
*July 28, 2011 by Sonu*

**physics**

An object mass 1,448 g is attached to a spring with spring constant k = 815 N/m. The object is then displaced by a distance d from the equilibrium position and is released. Shortly after, it passes with speed v = 6.4 m/s through the equilibrium position. By what distance d was...
*December 2, 2009 by Arianne*

**Physics**

A person is standing on the edge of a cliff of height h= 24 m. She throws a stone of mass m=0.2 kg vertically down with speed v0= 10 m/s (stone 1) and another stone of the same mass vertically up at the same speed (stone 2). The gravitational acceleration is g=10 m/s2. (a) ...
*October 6, 2013 by Anon*

**science**

a stone is thrown vertically upwards fron the edge of a cliff of height 100m, with a velocity of 9m/s. The stone then fall to the ground(the foot of the cluff). Determine the total time the stone will take to hit the ground
*February 3, 2013 by promice*

**physic **

A 4 kg object is attached to a vertical rod by two strings, as in the figure. The object rotates in a horizontal circle at constant speed 6 m/s. Find the tension in (a) the upper string and (b) the lower string.
*April 18, 2010 by yusra*

**physics**

An object falling under the pull of gravity is acted upon by a frictional force of air resistance. The magnitude of this force is approximately proportional to the speed of the object, which can be written as f = bv. Assume that b = 10 kg/s and m = 56 kg.
*October 4, 2010 by devonte*

**Physics**

A glider airplane is coasting horizontally when a very heavy object suddenly falls out of it. As a result of dropping this object, the glider's speed will a. increase. b. decrease. c. remain the same as it was.
*March 5, 2011 by Joe *

**Science**

When an unbalanced force acts on an object the motion of the objects changes. Sometimes the object continues to move at the same speed. When that happens, what is it that changes? a)direction; b)friction; c)mass; d)weight
*January 11, 2012 by Miliano*

**Science**

When an unbalanced force acts on an object the motion of the objects changes. Sometimes the object continues to move at the same speed. When that happens, what is it that changes? a)direction; b)friction; c)mass; d)weight
*January 11, 2012 by Miliano PLEASE*

**physics**

The 1994 Winter Olympics included the aerials competition in skiing. In this event skiers speed down a ramp that slopes sharply upward at the end. The sharp upward slope launches them into the air, where they perform acrobatic maneuvers. In the women's competition, the end of ...
*January 29, 2007 by James*

**Physics**

A stone is shot upward with a speed of 24.4 m/s from a tower and lands at the base of the tower with a speed of 44.0 m/s. How long does it take?
*June 6, 2015 by Mark*

**Math**

A rock is thrown upward with a velocity of 12 meters per sec from the top of a 25 meter high cliff and it misses on it's way back down. When will the rock be 3 meters from water
*September 1, 2015 by Kelly*

**math**

if an object on earth is projected upward with an initial velocity of 32 feetper second, then its height after t seconds in given by h(t)=32t-16t^2
*November 18, 2012 by Anonymous*

**@ elena - intro to physics **

I posted this question earlier and thank you for respnding, but the answer you give me was incorrect. I try looking at hw you solve and cant find the mistake but when when I check your answer it said it was wrong. Can you please look over it again, I greatly appreciate it a ...
*April 15, 2012 by emilia*

**physics**

An object with mass of 7kg was thrown down with initial velocity 10m/s and reached the ground in 10s. What was the the initial height
*March 9, 2012 by ******tasha*******

**science **

Which statement best describes the inertia of an object? A.Inertia is the tendency of an object to resist a change in its motion. B.Inertia is the weight of an object. C.Inertia is what determines how fast an object will fall. D.Inertia measures how hard an object will hit ...
*February 17, 2014 by victoria *

**Physics**

Mutiple choice: A car travelling at 10 m/s accelerates at 3 m/s^2. Its new velocity is A.) 12 m/s B.) 22m/s C.) 17 m/s D.) Can not be determined. Which of the following is not acceleration? A.) rate of change of speed in a particular direction B.) rate of change of motion in a...
*December 17, 2013 by Katie*

**Physics**

A ball is thrown from the top edge of a building with initial velocity components of 15m/s(up) vertically and 20m/s horizontally. It strikes ground 140m from the base of the building. What is the height of the building? I tried using V2^2 = V1^2 + 2ad and it gave me 11.25 ...
*March 13, 2008 by Anonymous*

**Physics**

A ball is thrown from the top edge of a building with initial velocity components of 15m/s(up) vertically and 20m/s horizontally. It strikes ground 140m from the base of the building. What is the height of the building? I tried using V2^2 = V1^2 + 2ad and it gave me 11.25 ...
*March 13, 2008 by Anonymous*

**Physics**

A ball is thrown from the top edge of a building with initial velocity components of 15m/s(up) vertically and 20m/s horizontally. It strikes ground 140m from the base of the building. What is the height of the building? I tried using V2^2 = V1^2 + 2ad and it gave me 11.25 ...
*March 15, 2008 by Anonymous*

**last one i promise....physics**

A startled armadill leaps upward rising .536 m in teh first .197 s. What is its initial speed as it leaves the ground? What is its speed at the height f .536m? How much higher does it go?
*September 10, 2007 by Kristen*

**Physics relationship**

Let W1 represent the work required to accelerate an object on a frictionless horizontal surface from rest to a speed of v. if W2 represents the work required to accelerate the same object on the same surface from a speed of v to 2v, then which one of the following is the ...
*October 16, 2012 by Cody*

**Physics(Please respond)**

A 79.2-kg person stands on a scale in an elevator. What is the apparent weight when the elevator is (a) accelerating upward with an acceleration of 1.92 m/s2, (b) moving upward at a constant speed, and (c) accelerating downward with an acceleration of 1.89 m/s2 I was going to ...
*May 28, 2012 by Hannah*

**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*

**algebra**

an object is launched vertically in the air at 29.4 meters per second from 10 meter tall platform . find its maximum height in seconds and in meters ?
*March 18, 2013 by zz*

**algebra**

an object is launched vertically in the air at 29.4 meters per second from 10 meter tall platform . find its maximum height in seconds and in meters ?
*March 18, 2013 by zz*

**Physics**

When a small object is launched from the surface of a fictitious planet with a speed of 52.0 m/s, its final speed when it is very far away from the planet is 32.0 m/s. Use this information to determine the escape speed of the planet.
*April 1, 2014 by Ying*

**physics**

1. A man pulls a 300 N object across a horizontal surface using a 100 N force applied at a 35° angle. What is the normal force? If the object is pulled at constant speed, what is the coefficient of friction
*October 13, 2010 by devin boutte*

**Physics**

A stunt pilot of mass 55.0 kg who has been diving her airplane vertically pulls out of the dive by changing her course to a circle in a vertical plane. A)If the plane's speed at the lowest point of the circle is 95.6 m/s , what is the minimum radius of the circle for the ...
*November 14, 2006 by Kuwaiti*

**physics-pls help**

The ball is thrown froma height of 10 meters with an initial upward velocity of 3.0m/s. How long does it take to land on the ground? What is its maximum height? i know the formula is d=v1t+1/2at^2 but i do not know what else to do. pls help
*November 7, 2011 by ted 2*

**Physics**

A quarterback throws a football toward a receiver with an initial speed of 21 m/s at an angle of 30° above the horizontal. At that instant, the receiver is 12 m from the quarterback. In what direction and with what constant speed should the receiver run in order to catch the ...
*June 1, 2008 by Elisa*

**physics**

two masses are attached to both ends of a flexible cord passing through a friction less pulley. if the system is at rest, find the tensions at object A and object B. Object A = Object B. A=60 grams.
*August 3, 2014 by Kzsa*

**physics**

Near the surface of the Earth, a startled armadillo leaps vertically upward at time t = 0, at time t = 0.5 s, it is a height of 0.98 m above the ground. At what time does it land back on the ground?
*April 20, 2010 by Jason*

**Physics**

an electron is sitting 10cm away from a small object -5nc it is let go and moves away from the charged object when it reaches a distance of 15 cm away find its speed
*May 26, 2014 by Ryan*

**phy**

Review. An object with a mass of m 5 5.10 kg is attached to the free end of a light string wrapped around a reel of radius R 5 0.250 m and mass M 5 3.00 kg. The reel is a solid disk, free to rotate in a vertical plane about the horizontal axis passing through its center as ...
*January 3, 2013 by Anonymous*

**Physics**

An attacker at the base of a castle wall 3.82 m high throws a rock straight up with speed 7.10 m/s from a height of 1.45 m above the ground. (a) Will the rock reach the top of the wall? __yes __no (b) If so, what is its speed at the top? If not, what initial speed must it have...
*September 8, 2012 by Emily*

**Physics**

A ball is thrown at 15.5 m/s at 42° above the horizontal. Someone located 30 m away along the line3 of the path starts to run just as the ball is thrown. How fast, and in which direction, must the catcher run to catch the ball at the level from which it was thrown?
*September 26, 2014 by Sophie*

**physics**

A ball is thrown at 14 m/s at 57° above the horizontal. Someone located 30 m away along the line3 of the path starts to run just as the ball is thrown. How fast, and in which direction, must the catcher run to catch the ball at the level from which it was thrown?
*September 27, 2014 by karine*

**calculus**

a woman throws a ball vertically upwards so that 4seconds elapse before it strikes the ground. Determine the maximum height of the ball and the velocity with which the ball was thrown. Assume that the acceleration due to gravity is 10m/s squared and neglect the effect of air ...
*December 6, 2012 by Tatjana*

**Physics**

In class, we've been working on moment of inertia and recently did a lab regarding its usage. I don't feel too confident with the material yet and was hoping someone could look over my work and offer advice on what to do. We used solid spheres in the lab (2/5mr^2 used) and ...
*February 22, 2015 by Eva*

**Physics**

A vertical spring with a force constant of 250 N/m is compressed 7.5 cm and a 0.30 kg ball placed on top. The spring is released and the ball flies vertically upward. How high does the ball go? (thanks for helping)
*July 3, 2011 by Luis*

**physics**

A dynamite blast at a quarry launches a chunk of rock straight upward, and 2.0s later it is rising at a speed of 15m/s. Assuming air resistance has no effect, calculate its speed A) at launch and B) 5.0s after lauch
*January 29, 2012 by Natasha*

**Physics**

A projectile is launched vertically from the surface of the Moon with an initial speed of 1130 m/s. At what altitude is the projectile's speed three-fourths its initial value?
*November 15, 2009 by Emily*

**Physics**

A projectile is launched vertically from the surface of the Moon with an initial speed of 1500. At what altitude is the projectile's speed one-half its initial value?
*April 28, 2012 by Turk*

**physics**

A projectile is launched vertically from the surface of the Moon with an initial speed of 1210 m/s. At what altitude is the projectile's speed two-fifths its initial value?
*April 25, 2014 by Cam*

**Physics**

How do you determine the force constant of a spring when given the mass of an object being hung vertically, and the distance the spring stretches? What formula and logic do I need?
*January 10, 2011 by Jon*