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April 16, 2014

Search: How much force does an 82.0 kg astronaut exert on his chair while sitting at rest on the launch pad

Number of results: 81,287

Physics
An astronaut of mass 84.0 kg is taking a space walk to work on the International Space Station. Because of a malfunction with the booster rockets on his spacesuit, he finds himself drifting away from the station with a constant speed of 0.570 m/s. With the booster rockets no ...
Tuesday, April 8, 2014 at 1:57pm by Jason

math
A bourbon that is 51-proof is 25.5% alcohol by volume while one that is 82-proof is 41% alcohol by volume. How many liters of 51 proof bourbon must be mixed with 1.0-L of 82 proof bourbon to produce a 66 proof bourbon? Give answer to three decimal places.
Thursday, April 4, 2013 at 8:38pm by Lorie

Physics
the wind blows with a force of 425N north on a sail boat, while the water exerts a force of 325N west on the sailboat. Find the magnitude and direction of the net external force on the sailboat.
Monday, April 9, 2012 at 8:40pm by tom

physical science
does a sunken ship sitting on the ocean floor have a buoyant force on it.
Saturday, June 30, 2012 at 8:26pm by lora

MATH
My same comments apply. 6. 120 4. 60 other questions depend on assumptions on the not sitting alone group, and how they were sitting.
Saturday, February 25, 2012 at 8:14pm by bobpursley

physics
Suppose the radius of the room is 3.97 m and the speed of the wall is 12.0 m/s when the floor falls away. The source of the centripetal force on the riders is the normal force provided by the wall. (a) How much centripetal force acts on a 56.0 kg rider? (b) What is the minimum...
Wednesday, February 23, 2011 at 7:11pm by heather

Physics
An exceptional standing jump would raise a person 0.80 m off the ground. To do this, the person must first lower himself about 0.20 m prior to jumping. What force must a 70‒kg person, ready to jump at this position, exert against the ground in order to reach that height ...
Sunday, February 23, 2014 at 2:41am by Chrxeyshthoufov

Physics Heat
1) While Laurie is boiling water to cook spaghetti, the phone rings, and all 1.5 kg of water boils away during her conversation.If the water was initially at 15℃, how much heat must have been gained for all of it to turn into a water vapor? 2)By January, the 3.0 kg of ...
Wednesday, March 20, 2013 at 7:04pm by Isis

Physics
The maximum frictional force that the wall can exert must equal the person's weight at the minimum required rotational speed. Call that angular speed, in radians per second), w The centripetal force is M R w^2 and the maximum frictional force is M R w^2*0.49 Set that equal to ...
Saturday, December 15, 2007 at 6:05am by drwls

Physics
1. The efficiency of a squeaky pulley system is 73 percent. The pulleys are used to raise a mass to a certain height. What force is exerted on the machine if a rope is pulled 18.0 m in order to raise a 58 kg mass a height of 3.0 m? So to find the force exerted do I just do 58*...
Saturday, January 13, 2007 at 6:14pm by Anonymous

physics
A hand-driven tire pump has a 2.50 cm diameter piston and a maximum stroke of 31.0 cm. (a) How much work do you do in one stroke if the average gauge pressure is 2.40 multiplied by 105 N/m2 (about 35 psi)? (You may consider this an isothermal process.) (b) What average force ...
Wednesday, July 24, 2013 at 6:07pm by Alice

physics
Two uniform 81.6 g marbles 1.81 cm in diameter are stacked in a container that is 2.78 cm wide. 1) Find the force that the container exerts on the marble at the point of contact A, B and C. 2) What force does each marble exert on the other?
Sunday, May 19, 2013 at 3:01pm by Anonymous

English
1. I like the band because they sing with cheer. (Is this one correct?) correct 2. He always does exercise/exercises before breakfast. (Which one is correct, exercise or exercises?) It would be more usual to write, "He always exercises before breakfast." You could also use "...
Wednesday, October 15, 2008 at 6:11am by Writeacher

Vectors
A 65-kg boy is sitting on a seesaw 0.6 m from the balance point. How far from the balance point should a 40-kg girl sit so that the seesaw remains balance?
Sunday, May 23, 2010 at 11:21pm by Anonymous

math
A 65-kg boy is sitting on a seesaw 0.6 m from the balance point. How far from the balance point should a 40-kg girl sit so that the seesaw remains balance?
Saturday, March 5, 2011 at 5:01am by bhavana

physics
What gravitational force do the two protons in the helium nucleus exert on each other? Their separation is approximately 1.0 {\rm fm}.
Thursday, November 4, 2010 at 7:08pm by jack

physical
the ability to exert muscle force quickly is known as 1) agility 2) power 3) recation time 4) speed I need help! Plz anyone!
Wednesday, December 18, 2013 at 4:20pm by someone

math
If you separate the socks with equal charges 4 x10-9 C until they’re 7 cm apart, what force will each sock exert on the other?
Monday, March 3, 2014 at 8:06pm by Laura

Physics
force of gravity on elevator is 1250 kg * 9.8= 12250 N Force of counter weight is 1005 kg * 9.8= 9849 N 12250 N - 9849 N = 2761 N Total P = (F*d)/T
Wednesday, November 4, 2009 at 12:39pm by beez

physics
A net force gives a 10th kg object an acceleration of 2.0m/s . If the same force were applied to a 20 kg object what would its acceleration be?
Thursday, July 14, 2011 at 7:45pm by rosie

physics
You should be familiar with the formula Work = Force x Distance Wih Force in Newtons (kg*m/s^2)and Distance in meters, the Work that you compute will be in Joules (kg*m^2/s^2).
Tuesday, February 7, 2012 at 8:59am by drwls

Work energy
Question Details Three masses m1= 5.0 kg ; m2= 10.0 kg ; m1= 15.0 kg are attached by a strings over frictionless pulleys. The horizontal surface exerts a force of friction of 30N on m2. If the system is released from rest, use energy concepts to find the speed of m2 after it ...
Sunday, November 19, 2006 at 1:40pm by Harry

physics
Since the forces they exert on each other are equal and opposite (because of Newton's thrd law), the impulses that they exert are also of equal magnitude.
Thursday, December 20, 2007 at 10:46pm by drwls

Physics
A hovercraft of mass 69.0 kg can move on a horizontal surface, the x-y plane. A single unbalanced force acts on the hovercraft, but the size of the force is unknown. The hovercraft initially has a velocity of 5.0 m/s in the positive x direction and some time later has a ...
Wednesday, October 5, 2011 at 8:35pm by Help

physics
(a) The desk pushing against your hand (b) Your hand, pushing the desk. (c) The force applied to the desk was less than the amount necessary to overcome static friction. The desk is heavy and has a high static friction coefficient where the legs touch the floor. Newton's law ...
Thursday, February 18, 2010 at 6:04am by drwls

Physics
A charged particle A exerts a force of 2.39 ėN to the right on charged particle B when the particles are 13.3 mm apart. Particle B moves straight away from A to make the distance between them 16.1 mm. What vector force does particle B then exert on A?
Saturday, February 6, 2010 at 6:51pm by Jan

physics
When jumping straight down, you can be seriously injured if you land stiff-legged. One way to avoid injury is to bend your knees upon landing to reduce the force of the impact. A 75 kg man just before contact with the ground has a speed of 4.6 m/s. (a) In a stiff-legged ...
Monday, November 3, 2008 at 12:04am by Anonymous

business
health reocrds specialist rhonda kingsley is a creative sort who is a social gadfly with a preference for multi-tasking. her superior should be most concerned about rhonda's: a. wearing earphones and listening to music while working b. refusing to carry on social conversations...
Monday, February 15, 2010 at 9:32pm by shay

physics
The force shown in the force vs. time diagram in the figure below acts on a 1.10 kg object. Find: (a) the impulse of the force exerted on the ball.
Sunday, October 21, 2012 at 5:10pm by Anonymous

7th grade science
what is the gravitational potential energy of a 0.1 kg apple sitting on a 12.5 m flagpole?
Tuesday, February 7, 2012 at 4:53pm by lol

physics
a .415 kg baseball is pitched at 42 m/s. the batter hits it horizontally to the pitcher at 58 m/s. a) find the change in momentum of the ball. b) if the ball and bat were in contact for 4.6*10^-4 s what would be the average force while they touched?
Monday, January 31, 2011 at 3:00pm by skhan

Physical science
Actually, you exert enough force to move the door; therefore, the door moves and you need not move. But if the door was stuck and you exerted enough force, then you would move, probably by your feet sliding on the floor.
Monday, March 22, 2010 at 10:28pm by DrBob222

physics
Ten bags of top soil, each weighing 180 N, are placed on a 2.90-m long sheet of wood. They are stacked 0.50 m from one end of the sheet of wood, as shown below. Two people lift the sheet of wood, one at each end. Ignore the weight of the wood, how much force must each person ...
Wednesday, January 2, 2013 at 5:15pm by Jamison

Physics
A 54 kg box is being pushed a distance of 7.0 m across the floor by a force P whose magnitude is 153 N. The force P is parallel to the displacement of the box. The coefficient of kinetic friction is 0.25. Determine the work done on the box by each of the four forces that act ...
Monday, October 13, 2008 at 6:53pm by Brandon

Physics
I'm having a problem understanding a question. "If a man exerts a 200N force while pushing a crate 5.0 m across a floor against a frictional resistance of 40N, how much energy was expended by the person pushing?" I can figure out work done on the box and those sorts of ...
Tuesday, April 7, 2009 at 10:29pm by Brigid

Science
You need to calculate the average force. For this, we use Newton's second law, which states that: F = m*a (where F stand for force, m is mass and a is acceleration). Since the mass of the person was already given, we only need to calculate the persons acceleration. One of the ...
Tuesday, October 13, 2009 at 8:30pm by Christiaan

physics
A person bends over, and lifts an object of mass m = 28.5 kg while keeping the back parallel with the floor. The muscle that attaches 2/3 of the way up the spine maintains the position of the back. This muscle is called the back muscle or latissimus dorsi muscle. The angle ...
Thursday, November 11, 2010 at 7:02pm by rose

physics
An equilateral triangle 10.0m on a side has a 1.00-kg mass at one corner, a 2.00-kg mass at another corner, and a 3.00-kg mass at the third corner. Find the magnitude of the net force acting on the 1.00-kg mass. Find the direction of the net force acting on the 1.00-kg mass.
Wednesday, December 1, 2010 at 5:00am by Phy help!

Physics
An airplane has a mass of 33,000 kg and takes off under the influence of a constant net force of 38,000 N. What is the net force that acts on the plane's 71 kg pilot?
Wednesday, June 16, 2010 at 11:06pm by Lisa

PHYSICS
An airplane has a mass of 34,500 kg and takes off under the influence of a constant net force of 44,500 N. What is the net force that acts on the plane's 79 kg pilot?
Tuesday, September 21, 2010 at 3:20pm by veronica

Physics
An airplane has a mass of 2.04 × 104 kg and takes off under the influence of a constant net force of 2.18 × 104 N. What is the net force that acts on the plane's 86.0-kg pilot?
Tuesday, November 13, 2012 at 3:34pm by Tim

physics
An airplane has a mass of 3.41 × 104 kg and takes off under the influence of a constant net force of 2.57 × 104 N. What is the net force that acts on the plane's 78.8-kg pilot?
Sunday, November 25, 2012 at 10:47am by John

Science
Help, I am not sure I am doing this right. Are these correct? 1. What is the acceleration of a 1,500-kg elevator with a net force of 10,500 N? 2. What net force is needed to accelerate a 60-kg cart at 12 m/s 2? I think it is 720N
Friday, February 7, 2014 at 2:18pm by Alex

Physics
An airplane has a mass of 3.25 × 104 kg and takes off under the influence of a constant net force of 2.38 × 104 N. What is the net force that acts on the plane's 74.6-kg pilot?
Friday, February 21, 2014 at 6:39pm by Elle

Physics
A force of magnitude 7.50 {\rm N} pushes three boxes with masses m_1 = 1.30\,{\rm{kg}},m_2 = 3.20\,{\rm{kg}}, and m_3 = 4.90\,{\rm{kg}}, as shown in the figure(Figure 1) . (Ignore friction.) Find the magnitude of the contact force between boxes 1 and 2, and Find the magnitude ...
Saturday, February 16, 2013 at 5:54pm by Adnan

physics multiple choice
Far from any gravity, an astronaut accidentally releases a metal wrench inside a spaceship that is traveling at a constant velocity of 250 km/s away from earth in outer space. What will be the subsequent behavior of that wrench as observed by the astronaut? A. It will fall to ...
Wednesday, February 2, 2011 at 4:43pm by mely

physics multiple choice
Far from any gravity, an astronaut accidentally releases a metal wrench inside a spaceship that is traveling at a constant velocity of 250 km/s away from earth in outer space. What will be the subsequent behavior of that wrench as observed by the astronaut? A. It will fall to ...
Wednesday, February 2, 2011 at 8:27pm by andrea

Physics (dynamics)
A 47.0 kg slab rests on a frictionless floor. A 18.0 kg block rests on top of the slab. The static coefficient of friction between the block and the slab is 0.50, while the kinetic coefficient of friction is 0.40. The top block is acted upon by a force of 120 N. What is the ...
Saturday, March 10, 2012 at 9:41pm by Andrew

PHYSICS
A 30 kg. balloon is filled with 100 m to the third power of helium. how much force is needed to hold it down?
Friday, April 15, 2011 at 11:23am by DMITRIC

Physics-Gravitation
What is the gravitational potential energy of a two-particle system with masses 5.4 kg and 5.0 kg, if they are separated by 1.3 m? If you triple the separation between the particles, how much work is done (b) by the gravitational force between the particles and (c) by you? ...
Sunday, January 2, 2011 at 4:50pm by Jessica

physics
(a) What is the gravitational potential energy of a two-particle system with masses 5.4 kg and 5.0 kg, if they are separated by 1.3 m? If you triple the separation between the particles, how much work is done (b) by the gravitational force between the particles and (c) by you...
Monday, January 3, 2011 at 7:54pm by kelly

Physics
A force of 240.0 N causes an object to accelerate at 3.2 m/s^2. What is the mass of the object? 0.013 kg 75 kg 240 kg 786 kg
Monday, March 30, 2009 at 6:10am by Tiara

physics
You are an astronaut (m = 80 kg) and travel to a planet that is the same mass and size as Earth, but it has a rotational period of only 11 h. What is your apparent weight at the equator of this planet?
Tuesday, November 1, 2011 at 8:29pm by tamara

physics
You are an astronaut (m = 90 kg) and travel to a planet that is the same mass and size as Earth, but it has a rotational period of only 15 h. What is your apparent weight at the equator of this planet?
Thursday, October 4, 2012 at 10:18pm by Garcia

college physics
a) The applied force of F = 46N acts on the system of all three blocks. You can ignore the internal foces (cord and contact) between blocks and apply F = (M1 + M2 + M3) a, where M1 = 1 kg, M2 = 2 kg and M3 = 3 kg. a = 46 N/6 kg = 23/3 m/s^2 b) Let f1 be the cord tension. Only ...
Sunday, September 21, 2008 at 5:31am by drwls

physics
A 990 kg car is pulling a 300 kg trailer. Together, the car and trailer have an acceleration of 2.13 m/s2 in the forward direction. Neglecting frictional forces on the trailer, determine the following (including sign). (a) the net force on the car (b) the net force on the ...
Saturday, June 11, 2011 at 10:30pm by Sarah

Biomechanics
A pitched ball with a mass of 1 kg reaches a catcher's glove traveling at a velocity of 28 m/s. If the ball is in contact with the catcher's glove for 0.5 s during the catch, how much average force is applied by the glove? 56 A pitched ball with a mass of 1 kg reaches a ...
Sunday, November 21, 2010 at 1:39pm by MTV

AP Physics B
Hmmm. If it is 2 earth radii from the EArth, that means comparing g at the surface of earth (1 earth radi) to "g" at 3 earth radi is 1/9 gsurface So the gravitaional force field is g=1/9*9.8N/kg force on spacecraft= mass* 1/9*9.8 N/kg =1400kg*1.09N/kg=not your answer. Your ...
Friday, September 11, 2009 at 7:56pm by bobpursley

Physics
Jake has a mass of 88.0 kg and is zooming along in a 110.0-kg bumper car at 9.4 m/s. He bumped Allen's car, which is sitting at rest. Allen has a mass of 88.0 kg. After the elastic collision, Jake continues ahead with a speed of 3.2 m/s. How fast is Allen's car bumped across ...
Monday, March 18, 2013 at 5:59pm by Ian

physics
What force would you have to exert on a 326-N trunk up a 21.0° inclined plane so that it would slide down the plane with a constant velocity? What would be the direction of the force? (The coefficient of friction between the plane and the trunk is 0.329.)
Monday, December 7, 2009 at 6:14pm by Anonymous

Physics
An object with a mass of 12 kg slides 9 meters across a horizontal surface with a coefficient of kinetic friction of 0.22. For the duration of the slide an external force, F1, with a magnitude of 43 Newtons acts on the mass in the positive y direction while another force, F2, ...
Wednesday, October 31, 2012 at 6:45pm by Chelsea

Physics
An object with a mass of 12 kg slides 9 meters across a horizontal surface with a coefficient of kinetic friction of 0.22. For the duration of the slide an external force, F1, with a magnitude of 43 Newtons acts on the mass in the positive y direction while another force, F2, ...
Wednesday, October 31, 2012 at 6:58pm by Chelsea

math
if there the chairs are numbered and students are a b and c you can get 1 2 3 a b c a c b b a c b c a c a b c b a 6 POSSIBLE WAYS its denoted by 3! WHICH IS = 3 x 2 x 1 you have a choice of 3 students for the first chair, then of two students for the second chair and a choice ...
Monday, February 1, 2010 at 6:16pm by lucy

Physics
Two carts with masses of 4.82 kg and 2.72 kg move toward each other on a frictionless track with speeds of 5.03 m/s and 3.52 m/s respectively. The carts stick together after colliding head-on. Find the final speed.
Thursday, January 9, 2014 at 7:24pm by Daijha

Science
Explain 2 reasons why salad dressing is not a solution I think one is it seperates after a while of sitting is that right and I can't think of another
Friday, February 12, 2010 at 4:06pm by Hannah

physics
if a car has the 800 joules of potential energy while sitting on a hill that is sloped 6meters of the ground, what is the mass of the car
Thursday, May 2, 2013 at 10:03am by Anonymous

Physics
Wm = 20 kg * 9.8 N./kg = 196 N. = Weight of mass. Fm = 196 N. @ 30 Deg. = Force of mass. Fp = 196*sin30 = 98 N. = Force parallel to plane. Fv = 196*cos30 = 169.7 N. = Force perpendicular to plane. Fn = 0.75Fap - Fp = 0, 0.75Fap - 98 = 0, 0.75Fap = 98, Fap = 130.7 N. = Force ...
Thursday, January 19, 2012 at 9:56am by Henry

physics
A force in the +x-direction with magnitude F(x)=18.0N−(0.530N/m)x is applied to a 7.60kg box that is sitting on the horizontal, frictionless surface of a frozen lake. F(x) is the only horizontal force on the box. If the box is initially at rest at x=0, what is its speed ...
Wednesday, March 19, 2014 at 9:35pm by gzag

Physics
Do you mean a constant SPEED of 3.00 m/s? At maximum load, the motor must provide a maximum force (1000 kg)*g + 800 kg*g + 4000 N = 21,640 N. Maximum power requirement = Force x velocity = 65 kw
Thursday, March 12, 2009 at 6:01pm by drwls

physics
An engine of mass 5000 kg pulls a train of ten trucks each of mass 2000 kg along a horizontal track. Assume that the frictional forces to be 5000 N and that the engine exerts a force of 50 000 N on the rails. If the trucks are numbered from 1 to 10 starting with the one next ...
Monday, November 21, 2011 at 12:36pm by as01

physics
Ten bags of top soil, each weighing 150 N, are placed on a L = 2.95 m long sheet of wood. They are stacked 0.50 m from one end of the sheet of wood, as shown in Figure 8-27. Two people lift the sheet of wood, one at each end. Ignore the weight of the wood, how much force must ...
Wednesday, January 2, 2013 at 5:12pm by Jamison

physics - HELP
The average speed of a nitrogen molecule in air is about 686 m/s, and its mass is 4.85×10-26 kg. If it takes 3.78×10-13 s for a nitrogen molecule to hit a wall and rebound with the same speed but moving in the opposite direction. a)what is the magnitude of the average ...
Sunday, September 27, 2009 at 3:30pm by Anonymous

physics
Two crates, of mass m1 = 80 kg and m2 = 115 kg, are in contact and at rest on a horizontal surface. A 620 N force is exerted on the 80 kg crate. The coefficient of kinetic friction is 0.15.(a) Calculate the acceleration of the system.(b) Calculate the force that each crate ...
Monday, September 20, 2010 at 10:17pm by DJS

physics
A certain hydraulic system is designed to exert a force 100 times as large as the one put into it. (a) What must be the ratio of the area of the slave cylinder to the area of the master cylinder? (b) What must be the ratio of their diameters? (c) By what factor is the distance...
Tuesday, April 1, 2014 at 4:26pm by Mohanad

Accounting
5. Ken Lay was the chair of the board and the CEO for much of the time. How did this probably contribute to the lack of proper governance?
Sunday, December 13, 2009 at 9:08pm by Mike

physics
a man pulls an 80 kg sled up an incline that is at an angle of 25 degrees with the horizontal using a rope attached to the sled at an angle of 35 degrees. If the coefficient of friction between the sled and the incline is 0.70, what force must the man exert on the rope to keep...
Saturday, December 21, 2013 at 2:56pm by Paul

physics
An air puck of mass 0.33 kg is tied to a string and allowed to revolve in a circle of radius 1.12 m on a horizontal, frictionless table. The other end of the string passes through a hole in the center of the table and a mass of 1.1 kg is tied to it. The suspended mass remains ...
Saturday, December 10, 2011 at 12:28pm by tanya

Physics
What force would you have to exert on a 324 N trunk up a 19 degree inclined plane so that it would slide down the plane with a constant velocity? What would be the direction of the force? The coefficient of friction between the plane and the trunk is .322.
Thursday, October 4, 2007 at 8:19pm by Anonymous

physics
If you move your hand inward to be only 0.10 m from the bolt, find the force that you should exert to achieve the same torque.
Saturday, March 3, 2012 at 9:27pm by Christie

Physics
How far apart are they? Is the charge in Coulombs? The force they exert on each other will be independent of the external E field. Use Coulomb's Law.
Monday, November 5, 2012 at 5:15am by drwls

physics
When jumping straight down, you can be seriously injured if you land stiff-legged. One way to avoid injury is to bend your knees upon landing to reduce the force of the impact. A 68.5-kg man just before contact with the ground has a speed of 5.59 m/s. (a) In a stiff-legged ...
Tuesday, October 23, 2012 at 10:37am by ben

Physics
When jumping straight down, you can be seriously injured if you land stiff-legged. One way to avoid injury is to bend your knees upon landing to reduce the force of the impact. A 60.8-kg man just before contact with the ground has a speed of 5.31 m/s. (a) In a stiff-legged ...
Monday, November 26, 2012 at 9:59am by Drue

physics 1
When jumping straight down, you can be seriously injured if you land stiff-legged. One way to avoid injury is to bend your knees upon landing to reduce the force of the impact. A 88.1-kg man just before contact with the ground has a speed of 3.53 m/s. (a) In a stiff-legged ...
Tuesday, March 25, 2014 at 5:45pm by Anonymous

Physics
A 0.149-kg baseball is pitched a 40 m/s. The batter hits it horizontally to the pitcher at 56 m/s. Find the change in momentum of the ball. If the ball and bat were in contact 4.2 multiplied by 10-4 s, what would be the average force while they touched?
Sunday, February 24, 2013 at 1:45pm by Anonymous

Physics (dynamics)
While standing on a horizontal frictionless surface, a 50 kg student pushes against a wall with an average force of 125 N east for 0.110 s. Calculate the velocity of this student at 0.110 s
Monday, March 28, 2011 at 9:24pm by Anonymous

calc
I don't understand your notation of 82 ^\circ but I will assume that the ladder makes an angle of 82° with the ground at the foot of the ladder sin 82° = height/18 height = 18sin82 = appr 17.8 ft
Monday, September 17, 2012 at 1:11am by Reiny

Phyics help
I have a few physics questions: 1. How much mechanical work is done by a weightlifter holding a mass of 100 kg, 2.0m above the floor for 3.0 s? Explain ur answer. 2. Calculate the force needed to do 2.0 kJ of work to push a load of bricks 10m? 3. A carpenter applied a force of...
Saturday, April 9, 2011 at 8:27pm by Anonymous

Physics
A .22 rifle bullet, traveling at 373m/s, strikes a block of soft wood, which it penetrates to a depth of 0.125m. The block of wood is clamped in place and doesn't move. The mass of the bullet is 1.90. Assume a constant retarding force.How much time is required for the bullet ...
Monday, February 8, 2010 at 8:10pm by Anonymous

PHYSICS PLEASE HELP !!!!!
An object with a mass of 13 kg slides 5 meters across a horizontal surface with a coefficient of kinetic friction of 0.38. For the duration of the slide an external force, F1, acts on the mass in the positive y direction while another force, F2, has a magnitude of 67 Newtons ...
Thursday, October 27, 2011 at 2:46pm by Amanda

physics
A dragster and driver together have mass 918.8 kg. The dragster,starting from rest,attains a speed of 25.8 m/s in .53s . Find the average acceleration of the dragsters during this time interval. Answer in units of m/s^2. What is the size of the average force on the dragster ...
Saturday, July 2, 2011 at 10:23pm by alexa

physics
Two forces act on an object. The first force has a magnitude of 17.0 N and is oriented 68.0° counter-clockwise from the x axis, while the 2nd force has x- and y-components (-19.0 N, 16.5 N). Express the magnitude and direction of the net force.
Thursday, November 14, 2013 at 10:38pm by James

Physics
An 893 kg car passes over a bump in a road that follows the arc of a circle of radius 14.3 meters. A) What force does the road exert on the car as the car passes the highest point of the bump if the car travels 7.53 m/s. B) What is the max speed the car can have as it passes ...
Sunday, December 4, 2011 at 9:43pm by Ryan

PhysicsIn what direction relative to north must ca
An astronaut on the planet Zircon tosses a rock horizontally with a speed of 6.65 . The rock falls through a vertical distance of 1.50 and lands a horizontal distance of 8.90 from the astronaut. What is the acceleration of gravity on Zircon?
Thursday, February 9, 2012 at 6:09pm by Alyssa

physical sicence
If a force gives a 2-kg object an acceleration of 1.6 m/s2, what acceleration does this same force give to an 8-kg object?
Friday, October 12, 2012 at 11:32pm by maria

Physics
A 1000 kg car pushes a 2000 kg truck that has a dead battery. When the drive steps on the accelerator, the drive wheels of the car push against the ground with a force of 4500 N. a) What is the magnitude of the force of the car on the truck? b) what is the magnitude of the ...
Saturday, June 12, 2010 at 5:57pm by Sarah

Physics
How much time is needed to completely stop a 1600 kg car moving at 35 m/s if an average force of 4200 n is applied?
Thursday, January 6, 2011 at 10:36pm by Maya

physics
How much centripetal force is needed to keep a 0.20 kg ball on a 1.50 m string moving in a circular path with a speed of 3.0 m/s?
Thursday, December 15, 2011 at 2:50am by Anonymous

physics
How much centripetal force is needed to keep a 0.20 kg ball on a 1.50 m string moving in a circular path with a speed of 3.0 m/s?
Thursday, December 15, 2011 at 2:52am by Anonymous

Physical Science
Greyhounds can accelerate at 7/m/s2 at a start of the race . How much force does it take a 35 kg dog to produce this acceleration?
Tuesday, December 11, 2012 at 7:11pm by Casey

physical science
A force is used to raise a 50 kg crate through a height of 4m at a constant speed.how much gravitati
Tuesday, May 14, 2013 at 10:35am by thabiso

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