Tuesday

December 1, 2015
Number of results: 32,207

**physics **

our objects are situated along the y axis as follows: a 1.94 kg object is at +3.27 m, a 2.76 kg object is at +2.18 m, a 2.78 kg object is at the origin, and a 3.99 kg object is at -0.360 m. Where is the center of gravity of this system?
*February 6, 2012 by Dan*

**Physics **

"A moving object has a kinetic energy of 145 J and a momentum with a magnitude of 40.0 kg·m/s. Determine the mass and speed of the object." I simply cannot figure it out. I know that KE=.5mv^2 and that p=mv but I can't seem to piece it together. Please explain?
*January 7, 2015 by Jane*

**physicsa 6a**

A charge of 28.0 is placed in a uniform electric field that is directed vertically upward and that has a magnitude of 4.00×104 . What work is done by the electric force when the charge moves
*May 18, 2010 by Sally*

**Maaaath**

a stone thrown upward from the top of a 320-foot cliff at 128 ft/sec eventually falls to the beach below? how long does the stone take to reach its highest point?
*June 13, 2013 by Rachel*

**Physics PLEASE HELP!**

A spring with an unstrained length of 0.076 m and a spring constant of 2.6 N/m hangs vertically downward from the ceiling. A uniform electric field directed vertically upward fills the region containing the spring. A sphere with a mass of 5.09 10-3 kg and a net charge of +6.5...
*January 28, 2013 by Adriana*

**physics**

When will your apparent weight be greatest, as measured by a a scale in a moving elevator; when the elevators: (a) accel. downward (b) accel. upward (c) is in free fall (d) moves upward at a constant speed? In what case would you weight be the least? When would it be the same ...
*October 26, 2009 by Sasha*

**Physics**

A 76.6-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 1.94 m/s2, (b) moving upward at a constant speed, and (c) accelerating downward with an acceleration of 1.15 m/s2? I've already ...
*February 20, 2015 by Kaleem*

**physics**

a ball is thrown at an initial angle of 37 and initial velocity of 23.0 m/s reaches a maximum height h, as shown in the Figure. With what initial speed must a ball be thrown straight up to reach the same maximum height h?
*January 3, 2011 by Anonymous*

**Physics**

A 500.0 kg object is attached by a rope through a pulley to a paddle-wheel shaft that is placed in a well-insulated tank holding 25.0 kg of water. The object is allowed to fall, causing the paddle wheel to rotate, churning the water. If the object falls a vertical distance of ...
*February 5, 2014 by Carla*

**Excel VBA **

(I have no idea what to do I've asked our professor for help with this numerous times he refuses please help, I know how to make input boxes and a command button but that is it) (1) When an object is thrown into the air it exhibits what is called projectile motion. You will (...
*October 9, 2011 by Ebony*

**calculus**

a ball is thrown upward at 96 feet per second from the top of a 100 foot building. 1.when will the ball obtain maximum height 2. when will the ball hit the ground?
*October 24, 2011 by chris*

**physics**

A person pushes a 14.0-kg lawn mower at constant speed with a force of F = 88.0 N directed along the handle, which is at an angle of 45.0º to the horizontal (Fig. 4–45). (a) Draw the free-body diagram showing all forces acting on the mower. Calculate (b) the horizontal ...
*January 19, 2011 by mrmr*

**physics**

A 2.9 kg object oscillates with simple harmonic motion on a spring of force constant 430.0 N/m. The maximum speed is 0.8 m/s. What is the total energy of the object and the spring?
*October 12, 2011 by Jay*

**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 -- check answers**

1. In moving an object of mass 10 kg through a distance of 8.0 m, 40 J of work is done. The average force exerted is? my answer: 320N 2. What is the kinetic energy of a 20 kg object moving at a speed of 10 m/s? my answer: 1000J 3. the gravitational potential energy of a bird ...
*February 23, 2014 by Lisa*

**Physics**

A projectile is fired at an upward angle of 25.0^\circ from the top of a 310 m cliff with a speed of 220 m/s. What will be its speed when it strikes the ground below? (Use conservation of energy.)
*November 15, 2010 by Linda*

**physics**

Snow is falling vertically at a constant speed of 6.6 m/s. At what angle from the vertical do the snowflakes appear to be falling as viewed by the driver of a car traveling on a straight, level road with a speed of 66 km/h?
*September 16, 2009 by Nick*

**physics**

A rope of negligible mass pulls a 38-kg block block vertically upward with a constant acceleration of 6.0 meters per second squared. What is the tension of the rope?
*January 4, 2012 by Marilyn*

**physics**

Calculate the force needed to accelerate a 1 kg ball by 3 m/s: a. in space along way from the earth. b. on the ground in a direction horizontal to the ground. c. on the earth vertically upward.
*March 14, 2014 by Swastika*

**AP physics**

A particle of mass 3.00 kg is projected vertically upward with an initial velocity of 20.0 m/s. Neglecting air resistance, the particle’s kinetic energy when it is 20 m above the initial position is:
*December 11, 2014 by ali *

**physics**

A 1.90-kg object is attached to a spring and placed on frictionless, horizontal surface. A horizontal force of 14.0 N is required to hold the object at rest when it is pulled 0.200 m from its equilibrium position (the origin of the x axis). The object is now released from rest...
*January 26, 2011 by Roo Kun*

**physics**

what is the magnitude of the resultant of a 6.0n force acting vertically upward and a 4.0n force acting horizontally
*January 1, 2013 by bridget*

**physics**

a mass is thrown vertically upwards with an initial velocity of 30m/s. a second mass is dropped 0.5s later from directly above the height of 60m from the mass. when do they meet and at what height?
*June 11, 2014 by adii *

**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 ...
*October 24, 2010 by myx*

**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 ...
*July 9, 2011 by Kristi*

**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 ...
*June 27, 2012 by Emily*

**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 ...
*September 18, 2012 by Donald*

**physics**

A wire having mass per unit length of 0.440 g/cm carries a 2.80 A current horizontally to the south. What are the direction and magnitude of the minimum magnetic field needed to lift this wire vertically upward?
*February 21, 2012 by Jessica*

**PHYSICS**

A BALL IS PROJECTED VERTICALLY UPWARD FROM THE TOP OF A TOWER 60MITRE HIGH WITH A VELOCITY OF 30MITRE PER SECONDS.WHAT IS THE MAXIMUM HEIGHT ABOVE THE GROUND LEVEL?HOW LONG DOES IT TAKE TO REACH THE GROUND?
*November 15, 2015 by Anonymous*

**physics**

a ball is thrown upward with an initial velocity. What is it's velocity to halfway to its highest point? the answer is the square root of 2, but how do u get that answer?
*October 19, 2008 by Anonymous*

**Physics 102**

THIS IS A QUESTION IN MY PHYSICS BOOK & I REALLY REALLY NEED HELP. I AM 48YRS OF AGE JUST DECIDED TO GO BACK TO SCHOOL AND HONESTLY KNOW NOTHING ABOUT PHYSICS. Two facts: A freely falling object at Earth’s surface drops vertically 5 m in 1 s. Earth’s curvature “drops” 5 m for...
*September 25, 2013 by Miss Angie*

**AP Physics Word Problems ASAP!**

Could you please help me out with the following problems please? If a rocket initially at rest accelerates at a rate of 50 m/s^2 for one minute, its speed will be ? ( I know there are 60 seconds in 1 minute, so would I just use the formula, d=vt, and I would get 3000 m/s) It ...
*September 5, 2007 by Cheyanne*

**physics please help**

One end of a thin rod is attached to a pivot, about which it can rotate without friction. Air resistance is absent. The rod has a length of 0.59 m and is uniform. It is hanging vertically straight downward. The end of the rod nearest the floor is given a linear speed v0, so ...
*November 27, 2010 by roni*

**PHYSICS**

A ball thrown horizontally with speed vi = 26.0m/s travels a horizontal distance of d = 60.0m before hitting the ground. From what height h was the ball thrown? Which I got this answer below. h= 26.1 m How do I solve for the one below. If it takes a ball dropped from rest 2....
*February 5, 2015 by Iris PHYS*

**Physics -- check answers please**

1. In moving an object of mass 10 kg through a distance of 8.0 m, 40 J of work is done. The average force exerted is? my answer: 320N 2. What is the kinetic energy of a 20 kg object moving at a speed of 10 m/s? my answer: 1000J 3. the gravitational potential energy of a bird ...
*February 23, 2014 by Lisa*

**physics**

A 85 kg trampoline artist jumps vertically upward from the top of a platform with a speed of 3.5 m/s. How fast is he going as he lands on the trampoline, 3.0 m below? If the trampoline behaves like a spring of spring constant 5.2 x 10^4 N/m, how far does he depress it? My ...
*May 28, 2007 by micole*

**physics**

an object initially at rest accelerates uniformly at 5m/sec^2 until it obtains a speed of 30m/sec. What distance does the object move while accelerating?
*September 21, 2011 by Anonymous*

**Physics**

On a distant planet, a freely falling object has an acceleration of 17m/s2m/s^2 . Calculate the speed that an object dropped from rest on this planet acquires in 2.0ss .
*September 8, 2014 by Mia*

**Physics**

What is the speed of the rocket when it is 350 above the surface of the earth? A rocket starts from rest and moves upward from the surface of the earth. For the first 10 of its motion, the vertical acceleration of the rocket is given by a(y)=2.9, where the -direction y+ is ...
*September 9, 2012 by Andrew*

**physics**

A 10-kg object is falling vertically through moist air. If its acceleration is observed to be 6 m/s/s, what is the resistance in newtons offered by the air?
*April 17, 2011 by john*

**science**

A ball is thrown upward to 80m high, ball will be 2times at 80m during the interval of 6sec, accelaration -10 and find velocity?
*August 21, 2012 by Anonymous*

**science**

A ball is thrown upward to 80m high, ball will be 2times at 80m during the interval of 6sec, accelaration -10 and find velocity?
*August 21, 2012 by Anonymous*

**physics # 7**

7. An object falling in air experiences a drag force directly related to the square of the speed such that F = Cv2 (where C is a constant of proportionality). Assuming that the buoyant force due to air is negligible, the terminal velocity of this falling body is best described...
*August 7, 2007 by gomez*

**calculus 2**

A tomato is thrown upward from a bridge 23 m above the ground at 40 m/sec. find acceleration, velocity, and height of tomato at time t. How high does the tomato go, and when does it reach its highest point?
*January 31, 2013 by Rachel*

**Physics**

Starting from rest, a 1.6x10-4 kg flea springs straight upward. While the flea is pushing off from the ground, the ground exerts an average upward force of 0.42 N on it. This force does 3.6x10-4 J of work on the flea. (a) What is the flea's speed when it leaves the ground? (b...
*March 12, 2012 by April*

**Phys**

Starting from rest, a 1.6x10-4 kg flea springs straight upward. While the flea is pushing off from the ground, the ground exerts an average upward force of 0.38 N on it. This force does 2.6x10-4 J of work on the flea. (a) What is the flea's speed when it leaves the ground? (b...
*July 3, 2013 by justin*

**physics**

Starting from rest, a 1.6x10-4 kg flea springs straight upward. While the flea is pushing off from the ground, the ground exerts an average upward force of 0.38 N on it. This force does 2.6x10-4 J of work on the flea. (a) What is the flea's speed when it leaves the ground? (b...
*July 22, 2013 by ODU*

**Physics **

Four rocks are thrown horizontally from a building, with varying speeds and from various floors. Rock 1 lands a distance r away from the building, rock 2 lands 2r away from the building, rock 3 lands at distance 3r, and rock 4 at 4r. Ignore air resistance. Drag the rocks into ...
*July 5, 2014 by Anonymous*

**calculus I**

the height (in meters) of a projectile shot vertically upward from a point 2 m above ground level with initial velocity of 24.5 m/s is h=2+24.5t-4.9t^2 after t seconds. Find the velocity after 2s and 4 s?
*April 7, 2014 by Please help mee*

**Physics**

Water flows at 2.4 m/s through a garden hose of diameter 1.59 cm and emerges from a nozzle of radius 0.64 cm. If the nozzle is directed vertically upward, to what height would the water rise?
*November 18, 2015 by Chai*

**Physics **

When an object is thrown into the air, relate it's mechanical energy to kinetic and gravitational energy.
*December 14, 2010 by Ethan*

**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**

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**

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. 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**

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*

**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**

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**

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*

**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*

**Physics**

A plane is flying horizontally with speed 193 m/s at a height 2010 m above the ground, when a package is dropped from the plane.The acceleration of gravity is 9.8 m/s^2. 1.What is the horizontal distance from the release point to the impact point? Answer in units of m. 2.A ...
*September 9, 2015 by Anonymous *

**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 *

**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**

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**

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*

**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*

**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*

**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*

**PreCalculas**

A ball is thrown upward with an initial velocity of 4 ft/sec from a height of 10 feet. What is the maximum height that the ball will reach? h(t)=-16t^2+v0t+s0 Please help im lost
*October 14, 2015 by Ryan*

**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**

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*

**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*

**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*

**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 *

**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*

**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 *

**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 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**

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*

**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*

**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*

**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**

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*