Wednesday

July 27, 2016
Number of results: 77,497

**Physics**

An object is placed on an inclined plane which forms an angle B = 18º with the horizontal. An external force F of magnitude 14.3 N is applied to the object. The force F acts in a direction which forms an angle A = 62º with the horizontal. As a result of the force F, the object...
*November 17, 2009 by Leah*

**physics**

An object is placed on an inclined plane which forms an angle B = 18º with the horizontal. An external force F of magnitude 14.3 N is applied to the object. The force F acts in a direction which forms an angle A = 62º with the horizontal. As a result of the force F, the object...
*November 18, 2010 by sean*

**Maths**

A body of mass m falling from rest is subjected to the force of gravity and an air resistance proportional to the square of the velocity. If it falls through a distance x and posseses a velocity v at that instant then show that.
*July 17, 2016 by Bhaskar*

**physics charges. please help!**

A charge Q = +4.5 uC is located at the origin and is fixed so that it cannot move. A small object with mass m = 2.0 g and charge q = +8.0 uC is released from rest at point A on the x-axis at x = 2.0 cm. The small object moves without friction along the x-axis under the ...
*November 12, 2012 by Matt*

**physics**

Assume you are given two objects whose centre of mass is located exactly at the origin. The first object has a mass of 33 kg and is located at position +30 m with respect to the origin. If the mass of the second object is 7.0 kg, what is its position (in m) with respect to the...
*November 8, 2011 by Lydia*

**physics**

An object has the following equation of motion (equation describing its position as a function of time). x(t) = x0 where x0 = −2.3 m. What is the object’s position at time t = 23 s? What is its velocity?
*January 23, 2015 by Allison*

**Algebra**

"The table shows how far Object 1 traveled as a function of time. ___________________________________ Time (sec)| Distance Traveled (ft) x | y ___________________________________ 2 | 18 4 | 36 6 | 54 8 | 72 ___________________________________ The equation shows how far Object ...
*April 29, 2016 by Sam*

**Physics**

What is the moment of inertia of an object that rolls without slipping down a 2.00-m-high incline starting from rest, and has a final velocity of 6.00 m/s? Express the moment of inertia as a multiple of MR2, where M is the mass of the object and R is its radius.
*July 14, 2013 by Justin*

**Physics**

An object moving in the positive x direction went from a velocity of 2.5 km/s to a velocity of 8.0 km/s in 6.2 seconds. What's the object's average acceleration?
*May 24, 2012 by Jen*

**physics**

an object moving in the positive x direction went from a velocity of 2.5 km/s to a velocity of 8.0 km/s in 6.2seconds. what was the object's average acceleration?
*May 24, 2012 by Jen*

**Physics**

An object with mass 8.5kg is moving vertically upward with a velocity if 35m/s at a height of 100m above the ground. Find the time the object takes to reach the ground Thanks!!
*May 19, 2014 by Meg*

**Physics**

How do you find the acceleration of an object on a velocity-time graph if the acceleration of the object is at t = 5 s in m/s2?
*January 29, 2012 by Paige*

**Physics**

How do you find the acceleration of an object on a velocity-time graph if the acceleration of the object is at t = 5 s in m/s2?
*January 29, 2012 by Paige*

**Physics**

How do you find the acceleration of an object on a velocity-time graph if the acceleration of the object is at t = 2 s in m/s2?
*January 29, 2012 by Paige*

**Physics**

order the acceleration from least to greatest. a) 30<-object ->50 b) 20<-object c) 20<-object->40 d) 10<-object->30 I think the answer is "dcba" but that isn't right
*November 29, 2015 by Jacob*

**PHYSICS**

3 FORCES ACT ON MOVING OBJECT.FIRST FORCE HAS MAGNITUDE OF 80.0N AND DIRECTED DUE NORTH.ANOTHER HAS MAGNITUDE 60.0N AND DIRECTED DUE WEST.WHAT IS THE MAGNITUDE AND DIRECTION OF THIRD FORCE,SUCH THAT THE OBJECT MOVE IN CONSTANT VELOCITY?
*June 25, 2012 by Anonymous*

**physics**

an object displaces 2.3×〖10〗^(-3) m^3 of water when totally immersed into it. What is the buoyant force exerted by water? What is the density of the object if its mass is 26kg?of what material is the object made of?
*November 14, 2010 by fae*

**physics**

the gravitational force exerted on a solid object is 5.00N.when the object is suspended from a spring scale and submerged completely in water the scale reads 3.50N. find the density of the object.
*August 16, 2013 by gosa*

**Physics**

A uniform disk of radius 0.45 m is mounted on a frictionless, horizontal axis. A light cord wrapped around the disk supports a 1 kg object, as shown. When released from rest the object falls with a downward acceleration of 4.5 m/s^2. What is the moment of inertia of the disk? ...
*February 16, 2016 by Nate*

**physics**

An object has a force of 10 newtons from the right and 17 newtons from the left. Once the object starts moving toward the right, an additional force of 7 newtons is applied from the right. What can you conclude about the direction of motion of the object after the application ...
*November 27, 2012 by Kiandra*

**physics**

An object has a force of 10 newtons from the right and 17 newtons from the left. Once the object starts moving toward the right, an additional force of 7 newtons is applied from the right. What can you conclude about the direction of motion of the object after the application ...
*November 27, 2012 by Kiandra*

**Physic**

How does doubling the mass of one object and tripling the distance between another object change the gravitational force betweem them? FG = G M1 M2 / r2 a. Force changes by 2/3 b. Force changes by 2/9 c. Force increases by 9 d. Force decreases by 3 e. No change in force
*February 2, 2011 by Help*

**physics**

Question Part Submissions Used A 3.25-kg object is attached to a vertical rod by two strings as shown in the figure below. The object rotates in a horizontal circle at constant speed 6.60 m/s. (a) Find the tension in the upper string. N (b) Find the tension in the lower ...
*March 27, 2016 by mary*

**physics**

a rope can withstand 300N of force before snapping. assume that a 4 kg object is attached to the rope and is being spun in a horizontal circle with a .5 m radius. Find the velocity of the object when the rope breaks.
*January 5, 2009 by john marsh*

**physics**

A six kilogram object undergoes an acceleration of 2.0 meters per second squared. Part a. What is magnitude of the net force acting on the object? Part B. If the same force is applied to a 4 kilogram object what acceleration is produced?
*October 19, 2011 by katrina*

**Calculus Pre Test Monday Part 3**

The height, in metres, of an object that has fallen from a height of 180 m is given by the position function s(t)=-5t^2 +180, where t >0 and t is in seconds. a. Find the average velocity during each of the first two seconds. b. Find the ...
*February 27, 2016 by Morris*

**AP Calculus**

An object moves along the x-axis with a velocity of v(t) = sin(pi/3)t for time t greater than or equal to 0. What is the total distance traveled by the object over the time interval 0 less than or equal to t less than or equal to 4?
*March 9, 2011 by Sandy*

**Physics help**

A 1.0 kg object is suspended from a vertical spring whose spring constant is 105 N/m. The object is pulled straight down by an additional distance of 0.25 m and released from rest. Find the speed with which the object passes through its original position on the way up.
*November 15, 2010 by david*

**College Physics**

Which of the following statements is false? 1)The velocity of an object can change while maintaining a constant speed. 2)An object that maintains a constant speed must have zero acceleration. 3)An object that has a non-zero acceleration must have a changing velocity. 4)The ...
*October 4, 2010 by Bryce*

**Physics **

The two masses shown in the figure are each initially 1.80 m above the ground, and the massless frictionless pulley is fixed 4.8 m above the ground. (mA = 1.5 kg and mB = 3.4 kg.) What maximum height does the lighter object reach after the system is released? [Hint: First ...
*September 21, 2014 by Megan *

**Physics**

An object with mass 8.2 kg is attached to a spring with spring stiffness constant 370 N/m and is executing simple harmonic motion. When the object is 0.16 m from its equilibrium position, it is moving with a speed of 0.31 m/s. Calculate the maximum velocity attained by the ...
*March 5, 2013 by Anonymous*

**Physics**

The position of an object is described as x = 4.0t and y= 1.5t2 - 2t + 1.0. All factors are in SI-units. a) What is the begining velocity of the object? b) What is his acceleration? c) What is the direction along the x-axe at the time t=1.0 s ? Given answers are: 4.5 m/s in -...
*May 16, 2014 by Physics: Motion in two dimensions?*

**Physics**

A force of 5 N causes the displacement of an object by 3 m in the direction in which the force acts. What work did the object do/has been done on the object? My ans: Work = F * Displacement =+15 J positive because it acts in the direction of the object?
*November 10, 2009 by Nikita*

**Physics**

please check these answers for me When an object is moving with uniform circular motion, the centripetal acceleration of the object a. is circular b. is perpendicular to the plane of motion c. is zero d. is directed toward the center of motion D What is the term for the net ...
*February 15, 2009 by teamjakeward*

**english**

Thank you for using the Jiskha Homework Help Forum. You can learn best with examples. 1. Object pronouns are used everywhere else (direct object, indirect object, object of the preposition). Object pronouns are me, you, him, her, it, us, and them. Examples Jean talked to him. ...
*April 5, 2007 by SraJMcGin*

**Physics**

When a given object moves a circular path, the centripetal force varies directly as the square of the velocity and inversely as the radius of the curve. If the force is 640lb for a velocity of 20mi/h and a radius of 5m, find the force for the velocity of 30mi/h and a radius of...
*December 18, 2013 by Bernice Nicole*

**Physics**

When a given object moves a circular path, the centripetal force varies directly as the square of the velocity and inversely as the radius of the curve. If the force is 640lb for a velocity of 20mi/h and a radius of 5m, find the force for the velocity of 30mi/h and a radius of...
*December 18, 2013 by Bernice Nicole*

**Physics**

An object of mass .550kg is lifted from the floor to a height of 3.5m at a constant speed. If the object is released from rest after it is lifted, what is its kinetic energy just before it hits the floor? What is its velocity? Show your work and units.
*December 9, 2012 by Tim*

**Math-Algebra**

When a given object moves a circular path, the centripetal force varies directly as the square of the velocity and inversely as the radius of the curve. If the force is 640lb for a velocity of 20mi/h and a radius of 5m, find the force for the velocity of 30mi/h and a radius of...
*December 18, 2013 by Bernice Nicole*

**Physics**

An object travels with a constant acceleration for 10 s. The vectors in Figure 3-41 represent the final and initial velocities. carefully graph the x component of the velocity versus time, the y component of the velocity versus time and the y component of the acceleration ...
*September 11, 2015 by Alyssa*

**physic**

An object of mass m is at rest at the top of a smooth slope of height h and length L. The coefficient of kinetic friction between the object and the surface, μk, is small enough that the object will slide down the slope if given a very small push to get it started. Find ...
*October 23, 2014 by physic ----please help*

**Algebra**

An object is thrown downward with an initial velocity of 4 feet per second. The relationship between the distance s it travels and time t is given by s = 4t + 16t2. How long does it take the object to fall 72 feet?
*April 17, 2015 by Merty*

**physics, help urgent!**

charge Q = +4.5 ƒÝC is located at the origin and is fixed so that it cannot move. A small object with mass m = 2.0 g and charge q = +8.0 ƒÝC is released from rest at point A on the x-axis at x = 2.0 cm. The small object moves without friction along the x-axis under the ...
*November 14, 2012 by Brette*

**Physics. Please please help!**

A charge Q = +4.5 uC is located at the origin and is fixed so that it cannot move. A small object with mass m = 2.0 g and charge q = +8.0 uC is released from rest at point A on the x-axis at x = 2.0 cm. The small object moves without friction along the x-axis under the ...
*November 14, 2012 by Kyle*

**physics**

In the figure, forces A, B, C and D each have magnitude 50.0 N and act at the same point on the object. What torque (magnitude and direction) does A force exert on the object about point P? What torque (magnitude and direction) B does force exert on the object about point P? ...
*April 12, 2008 by Erin*

**Physics**

One end of a cord is fixed and a small 0.270-kg object is attached to the other end, where it swings in a section of a vertical circle of radius 2.50 m, as shown in the figure below. When θ = 18.0°, the speed of the object is 6.80 m/s. (a) At this instant, find the ...
*October 19, 2013 by <3*

**physics**

The figure gives the speed v versus time t for a 0.189 kg object of radius 6.42 cm that rolls smoothly down a 39.5° ramp. What is the rotational inertia of the object? im confused, how does kinetic energy relate to inertia? do i use the equations for torque?
*March 8, 2013 by Micaiah*

**algebra 1**

The formula for the height of a falling object is shown below, where h is the height of the object in meters, t is the time in seconds, and k is the height, in meters, from which the object began its fall. h = –4.9t² + k If a rock is dropped from a building that is 150 meters ...
*February 14, 2013 by lily*

**Physics**

An object of mass 13 kg going to the right with a speed of 9m/s collides with a 10kg object at rest. If the collision is completely elastic, calculate the speed of the 10 kg object after collision.
*February 25, 2008 by Maria*

**Physics**

A 3.00 kg object with an intial velocity of + 5.00 m/s in the postive X direction collides with and sticks to a 2.00 kg object with an intial velocity of -3.00 m/s in the negative Y direction. Find the final componet of velocity of the composite object. Use the conservation of...
*December 11, 2006 by Harry*

**physics**

two small objects, A and B, are fixed in place and separated by 3.00 cm in a vacuum. object A has a charge of +2.00 micro coulomb , and object B has a charge of -2.00 micro coulomb. how many electrons must be removed from A and put onto B to make the elecrtostatic force that ...
*April 26, 2010 by kim*

**Physics**

The force F sub x acting on a particle is shown as a function of X. If an object starts at the origin (of a graph) moving to the right with a kinetic energy of 45.5 J, how much kinetic energy does it have at x = 3.0 m ? I have no clue how to do about solving this. Any help ...
*July 15, 2015 by Anonymous*

**physics**

Which of the following statements about work is or are true? (More than one statement may be true.) A. Negative net work done on an object always reduces the object's kinetic energy. B. If the work done on an object by a force is zero, then either the force or the displacement...
*February 22, 2011 by andrea*

**physics**

The net force vector for an object in motion is a. always in the same direction as the object's acceleration vector. b. sometimes in the same direction as the object's acceleration vector. c. always in the same direction as the object's velocity vector. d. always in the same ...
*January 27, 2015 by Anonymous*

**Physics**

A 2.0kg object is moving at 3 m/s. A 4-N force is applied in the direction of motion and then removed after the object has traveled an additional 5m. The work done by this force is. Would the answer be simply: W=F*d= (4* 5m)= 20N and you only take the information concerning ...
*November 4, 2006 by Nancy*

**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*

**Physics**

An object of mass .550kg is lifted from the floor to a height of 3.5m at a constant speed. How much work is done by the lifting force (include units)? b.) How much work is done by the Earth on the object? c.) What is the net work done on the object? d.) What is the change in ...
*December 9, 2012 by Tim*

**PHYSICS**

An object is initially moving in the positive direction of an x-axis with a speed of 2.7 m/s. If the constant acceleration of the object is -0.12 m/s2, what distance will it have traveled when it turns around?
*December 18, 2015 by rebecca*

**Physics**

A 1.80 kg object is connected to a spring of force constant 120 N/m. How far is the spring stretched if it is used to drag the object across a floor at constant velocity? Assume the coefficient of kinetic friction is 0.60.
*October 5, 2010 by Anonymous*

**science**

Which of Newton’s laws says that a net force acting on an object causes the object to accelerate in the direction of the force?
*October 24, 2007 by jorge*

**Physics**

When an object slides over a smooth horizontal surface, how does the force of friction depend on the force of gravity on the object?
*November 17, 2009 by Cyn*

**physics**

an object 12 kg of mass slides over a surface with horizontal force of 75 N. The friction force is of 17 N. Determine the acceleration of the object.
*October 7, 2012 by daniela*

**Math/Trig**

Find the linear velocity of an object, 3 cm away from the center, rotating on a circular object with an angular velocity of 0.56 rad/sec. Round your answer to the nearest tenth.
*January 14, 2011 by Zackk*

**physics**

An object that has a mass of 36.0 kg is pushed along a horizontal surface with a force of 85.0 N at 30 degrees. If the force of friction is 52.0 N, what is the magnitude of the acceleration of the object?
*October 22, 2011 by Anonymous*

**physics**

what is the amount of force needed to move an object that has a mass of 2.0kg at an acceleration of 3.0m/s^2 with the force acting on the object at a 30 degree angle
*February 25, 2015 by tom*

**physics**

a body of mass 5kg initially at rest is subjected to a force of 20N. find the kinetic energy acquired by the body at the end of 10s.
*January 16, 2013 by prudhvi*

**science**

Work is done when a force is applied or an object OR a force causes an object to move I think the second one.
*February 19, 2011 by Kiki*

**physics**

Review Conceptual Example 2 in preparation for this problem. In Figure 5.4, an object, after being released from its circular path, travels the distance OA in the same time it would have moved from O to P on the circle. The speed of the object on and off the circle remains ...
*November 29, 2010 by megan*

**math**

a. 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. If you had only this formula to work with, what should your first step be in determining how long it ...
*August 26, 2014 by kerrica*

**physics **

DRWLS: PLEASE SEE ADDITIONAL INFO AT THE BOTTOM its the second part of the question that I don't understand: according the graph shown, the net force acting on an object varies wth the object's displacement. Calculate the work down by the force on the object at the various ...
*January 30, 2010 by Sarah N H*

**Physics**

An object with a mass of 49 N falls out of a plane going 20.0 m/s at 300 m above the ground. 1)How do I find the time that the object is in the air? 2)The horizontal distance of the object? Could someone help me out?
*January 4, 2009 by mw*

**physics**

A 1.6 kg particle moving along the x-axis experiences the force shown in the figure. The particle's velocity is 4.2 m/s at x = 0 m. The figure or graph has F (N) along the y axis and velocity along the x axis. A diagonal line drops from positive 10 force to -10 force from 0 cm...
*December 1, 2009 by Hope*

**physics**

A 190 kg object and a 490 kg object are separated by 0.400 m. At what position (other than an infinitely remote one) can the 35.0 kg object be placed so as to experience a net force of zero? ------------ m from the 490 kg mass I do not understand how to attack this problem. ...
*November 30, 2008 by tina*

**science**

On the planet mars, a free falling object released from rest falls 4m in 1s and is moving at 8m/s at that time. How fast would such an object moving after 2 seconds? 3 seconds?
*October 22, 2015 by Anonomyus*

**Science**

i posted this earlier, but no one answered. so i'll try again. Can you check my work please? true/false 1.) force is a scalar quantity: *FALSE 2.) the object on which a force acts is called the system: *TRUE 3.)The specific, indentifiable cause of a force is called the system...
*December 11, 2012 by Gavin*

**Physics**

An object m of mass m=1kg is attached to a string that passes through a hole in the center of a table. The object m moves in a circle of radius r=1.3m. An object M of mass M=2.1kg is tied to the other end of the string, and hangs vertically beneath the table. Assuming the ...
*October 10, 2011 by Alex*

**physics**

Three forces act on a moving object. One force has a magnitude of 61.9 N and is directed due north. Another has a magnitude of 52.0 N and is directed due west. What must be (a) the magnitude and (b) the direction of the third force, such that the object continues to move with ...
*September 23, 2012 by Robin*

**physics**

Three forces act on a moving object. One force has a magnitude of 83.4 N and is directed due north. Another has a magnitude of 47.2 N and is directed due west. What must be (a) the magnitude and (b) the direction of the third force, such that the object continues to move with ...
*June 30, 2013 by landan*

**physics**

Three forces act on a moving object. One force has a magnitude of 83.4 N and is directed due north. Another has a magnitude of 47.2 N and is directed due west. What must be (a) the magnitude and (b) the direction of the third force, such that the object continues to move with ...
*July 12, 2013 by howard*

**physics**

Three forces act on a moving object. One force has a magnitude of 62.6 N and is directed due north. Another has a magnitude of 45.9 N and is directed due west. What must be (a) the magnitude and (b) the direction of the third force, such that the object continues to move with ...
*October 3, 2014 by dan*

**PHYSICS**

Three forces act on a moving object. One force has a magnitude of 81.2 N and is directed due north. Another has a magnitude of 47.9 N and is directed due west. What must be (a) the magnitude and (b) the direction of the third force, such that the object continues to move with ...
*October 4, 2015 by Anonymous*

**Physics**

what is the instantaneous velocity of a free falling object 10s after it is released from a postion of rest? what is its average velocity during this 10s interval? how far will it fall during this time?
*June 15, 2009 by Hillary*

**physics**

if a 30 newton force is required to accelerate a 2kg object at 10m/s2, over a level floor, what is the magnitude of the frictional force acting on the object
*November 25, 2013 by bobthebuilder*

**Physics**

A 10.0 kg object is resting on a horizontal surface with a coefficient of friction of 0.7. Determine the minimum force that can move the object.At what inclination should force be applied?
*September 14, 2015 by May *

**URGENT HELP **

1.In a pith ball experiment, the two pith balls are at rest. The magnitude of the tension in each string is |T| = 0.55 N, and the angle between each string and a vertical line is θ = 27.33°. What are the values for the magnitudes of electrostatic force, Fq, and the ...
*May 20, 2016 by Sarah *

**Science**

What is the distance an object travels per unit of time? It's called the speed Depends on the velocity (speed), if the speed is 10mph, then the object would travel 10 miles (distance) per hour (unit of time). I'm unsure what your answer is saying, because velocity and speed ...
*September 18, 2006 by Ginger*

**Physics**

An 67.6 kg object moving to the right at 38.7 cm/s overtakes and collides elastically with a second 48.9 kg object moving in the same direction at 19.2 cm/s. Find the velocity of the second object after the collision. Answer in units of cm/s
*February 26, 2013 by colby*

**Physics**

An 67.6 kg object moving to the right at 38.7 cm/s overtakes and collides elastically with a second 48.9 kg object moving in the same direction at 19.2 cm/s. Find the velocity of the second object after the collision. Answer in units of cm/s
*March 5, 2013 by help*

**Math**

If h(t) represents the height of an object in feet above ground level at time t and h(t) is given by h(t)=−16t^(2)+14t+10 find the height of the object at the time when the speed is zero. The height of the object is h(t)= ___ feet.
*January 28, 2016 by Kyle*

**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**

In the figure below, an object, after being released from its circular path, travels the distance OA in the same time it would have moved from O to P on the circle. The speed of the object on and off the circle remains constant at the same value. Suppose that the radius of the...
*November 6, 2012 by Donald*

**physics**

a 10.0-g object moving to the right at 20.0 cm/s makes a elastic head-on collision with a 15-g object moving in the opposite direction at 30.0 cm/s find the velocity of each object after the collision.
*January 10, 2011 by Lily*

**Physics**

A 10.0 g object moving to the right at 19.0 cm/s makes an elastic head-on collision with a 15.0 g object moving in the opposite direction at 30.0 cm/s. Find the velocity of each object after the collision.
*November 7, 2012 by Corey*

**college Physics**

Two identical 0.18 kg blocks (labeled 1 and 2) are initially at rest on a nearly frictionless surface, connected by an unstretched spring, as shown in the upper diagram, where x2 = 0.06 m. Then a constant force of 9 N to the right is applied to block 2, and at a later time the...
*October 26, 2010 by Anonymous*

**physics**

it takes 100 N to pull and object up an inclined plane. the gravitional force on the object is 600 N what is the load force in this case? what is the effort force in this case? what is the mechanical advantage?
*November 10, 2011 by mdm*

**physics**

A ball starts at the origin from rest rolling down a hill. It takes seven seconds for the ball to reach point “A”, which is 25 meters from the origin. At point “B”, the ball’s velocity is 15 m/s. You may assume constant acceleration. a. What is the acceleration of the ball? [2...
*September 24, 2013 by Sue*