Search: physics-newton's laws

Number of results: 99,460

physics
6)Which of Newton's laws would best explain what causes a basketball to bounce? Third 7)Which of Newton's laws would best explain the whiplash caused by being rear-ended in a car accident? First
Monday, March 31, 2008 at 5:07pm by Jon

Science
The correct verb is "are". "Laws" is plural. Newton is the discoverer of three laws of motion and one of gravity. A computer search will easily lead you to what the laws are.
Saturday, September 19, 2009 at 7:12pm by drwls

Physics
Let us know what you find out. Use Newton's and Coulomb's laws. The ratio is about 10^39, as I recall. The electrostatic force is the higher one. You will need to use the electron charge and the electron and proton mass.
Wednesday, September 9, 2009 at 6:51pm by drwls

Science
Are you sure you are after Newton's Laws of motion? There is also Newton's Law of cooling.
Wednesday, December 2, 2009 at 10:37pm by Dr Russ

Science
How can we use Kepler's laws or Newton's laws to learn about these objects?
Thursday, July 26, 2012 at 5:18pm by David

physics-newton's laws
thank you so much :)
Tuesday, October 12, 2010 at 8:07pm by mani

Physics
Summarize two observations that are contrary to the predictions based on Newton’s laws but that confirm Einstein’s explanation of gravity. Indicate how the predictions based on Newton’s theory differ from Einstein’s.
Wednesday, January 11, 2012 at 1:43pm by Pat

Physics! PLEASE HELP re Newton's Laws
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Sunday, December 3, 2006 at 2:55pm by QgzoXfra

Physics! PLEASE HELP re Newton's Laws
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Sunday, December 3, 2006 at 2:55pm by jfqIaKd

Physics-Newton's Law
Hi-I have a question-we're studying Newton's Laws and my question is: If I have a constant, non-zero force, how does the accleration change as the mass is changed. I think it changes proportionally-yes, or no but I'm not sure why except to say that's the law
Sunday, October 10, 2010 at 4:58pm by Juliette

Physics (Newton's laws)
2.20m/s 27.4N
Thursday, February 15, 2007 at 9:12am by Temesgen Bekele

physics
What is the difference between the second and third Newton’s Laws?
Tuesday, March 8, 2011 at 3:53am by Nazgul

physics
Many laws of physics turn out to be not quite right, r perfectly accurate, when experiments of higher accuracy are performed. Newton's "Laws" of gravity and mechanics turned out to be not quite right when Einstein discovered relativity. The conservation of energy...
Sunday, October 2, 2011 at 10:35pm by drwls

physics
We do not have your textbook. Newton's second and third laws are equally important.
Tuesday, February 22, 2011 at 5:54am by drwls

physics
at what angle must the two forces of 50 newton and 120 newton be acting so as to balanced by a force of 130 newton?
Tuesday, May 22, 2012 at 8:01am by anupriya

physics
The lunar landing rocket "LEMDE" was use for an unintended purpode: to change the orbit so that the spacecraft circled the moon and returned. It was then used to enter the Earth's atmosphere at a safe angle and speed for reentry. Newton's laws of motion were ...
Thursday, December 30, 2010 at 10:05pm by drwls

science
Please try some of the following links: http://search.yahoo.com/search?fr=mcafee&p=examples+of+Newton%27s+3+laws+of+motion Sra
Wednesday, February 23, 2011 at 10:50pm by SraJMcGin

Anthropologhy
Sumptuary laws are: (Points : 1) property laws. marriage laws. religious laws. civil laws.
Sunday, April 7, 2013 at 1:46pm by Tawnya

astronomy/physics
Use Newton’s Law of Gravity to calculate the force of gravity between a 39 kg person and Earth.
Thursday, December 1, 2011 at 4:59pm by silvia

Physics
Understanding Newton's First and Second Laws, why do all objets near Earth accelerate at a constant rate "g"? I'm very confused, is it something about how inertia keeps the objects accelerating? Please help , thank you.
Monday, November 3, 2008 at 7:22pm by Gerrad

science
I need help doing examples for newton's 3 laws of motion....can you help me?
Wednesday, February 23, 2011 at 10:50pm by joe

science
how does newton's laws apply to a toothpicks bridge
Sunday, March 14, 2010 at 8:55pm by lea

Physics Newton law
A 10O0Kg elevator is hoisted upward from rest by a cable. In the first two seconds there is an 1100N tension force in the cable hoisting the elevator. What is the speed after two seconds and how far has it travelled ? Get the acceleration first. Tension=mg + m*acceleration. ...
Sunday, November 5, 2006 at 2:03pm by harry

SCIENCE
For my science project i have to choose a sport and list five carefully thoughtout ways that Newton's three Laws of Motion are involed in the game i selected. The sport i have selected is tennis. i have 3 ways already but i am missing 2 more. Here are the 3 ways i have ...
Sunday, November 11, 2007 at 11:03am by Anonymous

Physics
An electron is accelerated by a uniform electric field (1000 V/m) pointing vertically upward. use newton's laws to determine the electron's velocity after it moves .10 cm
Sunday, April 25, 2010 at 10:54am by Standard C.

physics
force= pressure*area= .2atm(101.3kPa/atm)*4.39*33.5 m^2 do all that, and force will be in Newtons. (Pa pascal is a newton/m^2)
Tuesday, November 15, 2011 at 7:13pm by bobpursley

science
need help with an essay about Isaac Newton and his 3 laws.
Tuesday, May 13, 2008 at 10:37pm by tegz

sience
whats the laws of newton's first law of motion?
Wednesday, October 3, 2007 at 5:38pm by naijah

physics
1. The magnitude of magnetic force F =I•L•Bsinα. 2. Newton's law of gravity F= G •q1•q2/r^2 3. Ohm’s Law U =I•R 4. Coulomb’sLaw F= G• m1•m2/r^2 I believe that similar are #1 and #3, as #2 and # 4 are inverse ...
Monday, April 16, 2012 at 4:49am by Elena

Biology
Is there a mathematical way of writing Newton's three laws of motion
Saturday, August 15, 2009 at 8:19am by kt

science
I need help with an explanation about Isaac Newton and his three laws.
Tuesday, May 20, 2008 at 10:40pm by tegz93

physics
Using your knowledge of the concept of inertia and Newton’s three laws of motion, recount what happens to: a) cars and b) passenger from the moment the car starts to slow down until it is brought to rest by a collision with a solid object.
Saturday, June 25, 2011 at 7:29am by kashish khatri

NEWTON'S LAWS (FORCES)
One post is enough. The "following figure" is missing.
Saturday, October 8, 2011 at 8:48pm by drwls

Physics
A force (in this case, water) is applied to a waterwheel that turns and lifts a small weight that is attached to a string that is attached to the waterwheel's axle. How do Newton's 3 laws of motion describe this event?
Friday, April 5, 2013 at 12:18pm by Pat

physics
Newton was holding an apple of mass 120 g and thinking about the gravitational forces exerted on the apple by himself and by the Sun. Calculate the magnitude of the gravitational force acting on the apple due to Newton, the Sun, and the Earth, assuming that the distance from ...
Sunday, October 30, 2011 at 9:09pm by mymi

Math
Adam --- x apples Bob ---- y apples x+39 = 2y or x - 2y = -39 2x = y + 39 or 2x - y = 39 the first equation: x - 2y = -39 double the 2nd : 4x - 2y = 78 subtract them: 3x = 117 x = 39 into the 2nd: 78 - y = 39 -y = -39 y = 39 They each picked 39 apples.
Sunday, May 12, 2013 at 10:38pm by Reiny

Government Check
What was the name of the discriminatory laws enacted in response to the 13th, 14th and 15th Amendments? a)Separate but Equal Laws *b)Jim Crow Laws c)Dred Scott Laws
Sunday, July 4, 2010 at 5:04pm by Ariel

Physics
Hi-I have a question-we're studying Newton's Laws and my question is: If I have a constant, non-zero force, how does the accleration change as the mass is changed. I think it changes proportionally-yes, or no but I'm not sure why except to say that's the law ...
Sunday, October 10, 2010 at 3:11pm by Juliette

Physics
parallel plane: mgsin(39.5) - .330N = ma perpendicular plane: N - mgcos(39.5) = 0 <== because it is not accelerating perpendicular the plane so N = mgcos(39.5) therefore, parallel plane: mgsin(39.5) - .330(mgcos(39.5)) = ma m's cancel: gsin(39.5) - .33gcos(39.5) = a...
Wednesday, December 19, 2012 at 9:29pm by PhysicsPro

physics
why are we using the newton lost but not the newton remaining
Monday, October 4, 2010 at 3:35pm by flame

Physics
Physics is the Laws of Nature, formed in the beginning of time. You hate them? Odd. force=ma The great Issac Newton's second law of motion. force= mass*a but Vf^2=Vi^2+2a*d you know Vf, Vi, and distance d. Find acceleration a, put it in the F=ma equation.
Wednesday, December 22, 2010 at 8:55pm by bobpursley

Physics please help
Moment of inertia of the circular object is I =cmr^2 c=0.39 The potential energy at the height H is PE=m•g•H The total energy at height R is E=m•g•R+(1/2) •I•ω^2 +( 1/2) •m•v^2 = =m•g•R + (1/2) • (0.39) •m&#...
Thursday, March 29, 2012 at 4:37pm by Elena

physics
weight of the object with a mass 16 kg is 156.8 Newton on the earth and 26.13 Newton
Tuesday, September 6, 2011 at 10:19am by Madhavan

Physics -movies
There are many Hollywood movies which show a hero or villian running, jumping, or riding a motorcycle through big plate glass windows without apparent injury. Why is this an incredible violation of Newton's laws? i can't think of really anything that makes sense...
Wednesday, December 5, 2012 at 7:00pm by Maggie

physics (Newton's Laws)
Please help, A cat is stuck in a tree. You are designated with the job to get it out, yet you do not want to climb the tree, because you may get stuck as well. Instead you set up a pulley system. A rope (consider it massless) runs from the seat you sit on over an ideal pulley...
Sunday, March 17, 2013 at 9:27pm by Kathy

physics (Newton's Laws)
If an acrobat who weighs 800 N is clinging to a vertical pole using only his hands, neither moving up nor down, can we determine the coefficient of static friction between his hands and the pole? Explain your answer. Please, help. Thank you
Wednesday, March 13, 2013 at 10:38pm by Kathy

Science, Astrenomey
Just one more thing. Being a creationist does not mean you have to reject scientific theories. Even if God did create the universe, he had to use physical laws to do it. Maybe God is in control of those laws, and maybe not. If he is, he's done a pretty good job of making ...
Thursday, August 23, 2012 at 9:45am by Steve

Physics/Algebra
So what is your question? I'm assuming you want to know the height of the fountain. C = 6.28r = 250m, r = 250 / 6.28 = 39.8m. tan74 = h/r = h / 39.8 h = 39.8tan74 = 138.8m.
Sunday, August 14, 2011 at 5:40pm by Henry

physics-newton's laws
an aeroplane is flying in a horizontal circle with airspeed of 480 km/h. The wings of the plane are tilted at 40 degrees to the horizontal. What is the radius of the circle and how long does it take the plane to complete one full circle?
Tuesday, October 12, 2010 at 8:07pm by mani

6th grade science
What are Newton's three laws on motion in sixth grade lingo?
Tuesday, February 22, 2011 at 9:47pm by Marsha

astronomy/physics
F = M g, where g = 9.8 m/s^2, or, if you really must use that Newton law, F =G*Me*M/Re^2 M = 39 kg G = universal gravity constant Re = Earth radius Me = Earth mass You will have to look up the last three quantities. I have not memorized them. The answers should agree
Thursday, December 1, 2011 at 4:59pm by drwls

Physics
The angular speed is w = (2 pi radians)/31.5 s = 0.2 rad/s The speed of a rider remains V = R*w at all times I cannot interpret your {\rm symbol. If a stuffed animal is droppped at the top of the whhel, it starts with a horizonal velocity V = R*w. Proceed in the usual way (...
Thursday, July 1, 2010 at 9:35pm by drwls

Math
300/768=0.39. 0.39*100=39% Small=39% of large.
Tuesday, November 4, 2008 at 12:12am by Anonymous

NEWTON'S LAWS (FORCES)
Mass of a is 6.7 Mass of b is 2.2
Saturday, October 8, 2011 at 8:48pm by Anonymous

science/Newton's third law
if you kick a 5kg ball with one Newton it would push back on you with one Newton is this true???
Saturday, June 4, 2011 at 12:02am by who wants 2 no?

Social Studies
Okay! I don't know the correct terminology for what I call MINI-LAWS. MINI-LAWS are laws added on to one big law. Example: Math has to make up 1/3rd of all lessons taught. MINI-LAWS would include...grades 3-12, college exempt. So can you tell me what the correct ...
Tuesday, July 22, 2008 at 3:14am by Minerva

physics
The finding that light in free space has one speed, and one speed only, is consistent with ____________________. A) the conservation of energy as shown by Maxwell.B) general relativity.C) Newton's laws of motion.D) electromagnetic induction. My book tells me it is A and D ...
Saturday, April 28, 2012 at 10:04pm by Kristie

math
There are four multiples of 9 and 9 multiples of four between 0 and 39. If each number is independently chosen from 0 to 39, the probability of what you describe is 4/39 x 4/39 x 9/39 = 144/55,319 = 0.002428 or about 1 in 412
Sunday, January 31, 2010 at 11:32pm by drwls

physics
(1/2) m v^2 = 133 m v = 39.8 so m = 39.8/v (1/2) (39.8/v)v^2 = 133 39.8 v = 266 etc
Thursday, May 19, 2011 at 12:54am by Damon

Physics
a = -b because of Newton's third law. -c -d = 0 , and therefore -c = d, because the hook does not move. You could say that is a result of Newton's first law
Monday, February 15, 2010 at 10:32am by drwls

science
You might start here: http://www.google.com/search?q=how+Newton%27s+laws+apply+to+a+toothpick+bridge&ie=utf-8&oe=utf-8&aq=t&rls=org.mozilla:en-US:official&client=firefox-a Sra
Sunday, March 14, 2010 at 8:55pm by SraJMcGin

Physichal Science
In my homework it asks me this: Use the letters below to answer this question: What is the FORCE behind Newton's laws? The letters are p s l o p r u u l h
Thursday, September 25, 2008 at 12:12am by Jon

Physics
(10 points) 3. Use your data from Part 3 and Newton’s laws to explain why the force meter measures a force if the cart is moving at a constant velocity. The forces acting on the cart are the applied force (FA), the force of friction (Ff), weight (Fg) and the normal force...
Friday, October 29, 2010 at 12:04pm by Margaret Yeager

Physics/ Science
A derivation does not require an experiment, if it can be DERIVED mathematically from an accepted Law or Theory. It can also be used to experimentally test a theory. E = mc^2 is a derivation from the Special Theory of Relativity. It has been verified experimentally. The ...
Saturday, May 29, 2010 at 4:02am by drwls

math
There has to be more to this question. Are we to assume Newton's Law of "Cooling" or are you assuming the change is linear ? If linear, then it changed 8° in 4 min, or 2° per minute so after 6 minutes, it would change 12° to read 19° after 11 ...
Saturday, October 29, 2011 at 1:09pm by Reiny

physics
Wb = mg = 4kg * 9.8N/kg = 39.2N = Weight 0f block. Fb = 39.2N@0deg. Fp = 39.2sin(0) = 0 = Force parallel to surface. Fv = 39.2cos(0) = 39.2N. = Force perpendicular to surface. Fap - Fp - Ff = 0, 20 - 0 - Ff = 0, Ff = 20N. = Force of friction. u = Ff / Fv = 20 / 39.2 = 0.510...
Wednesday, October 26, 2011 at 2:43pm by Henry

physics
a) Consider and apply Newton's third law. You may need to review it. b) Use Newton's second law: a = F/m With F's equal, the smaller m (mass) has the larger a (acceleration).
Thursday, May 17, 2012 at 8:15am by drwls

physics
An object is acted by 3 coplanar forces:30 newton to the north, 20 in the direction S20degrees E and 25 newton in a direction W20degrees S.Find the resultant
Tuesday, April 5, 2011 at 5:42am by Jas

PHYSICS!
an object weighs 528.0 Newton. It is being pushed along a horizontal surface by a 475.0-Newton force. Determine the mass of the object in a numerical form.
Wednesday, October 31, 2012 at 12:31pm by Michael

science
Motion and newton's laws. able to calculate acceleration rates. Distinguish Between speed and velocity. And why velocity is important. Help me please I'm not understanding this. Thank you
Tuesday, January 24, 2012 at 11:52am by glenn help help help

physics
A) can be explained by Newton's 1st law. B) can be explained by Newton's third?
Wednesday, November 14, 2007 at 12:08am by Sarah

history
Yes. All civilizations have laws. They may be only oral and not written laws, but people need rules and laws when they live together.
Tuesday, September 25, 2007 at 2:41pm by Ms. Sue

Managerial Economics
Some states have had laws restricting the ssale of most goods on Sunday. Consumers, by and large, oppose such laws because they find Sundat afternoon a convenient time to shop. Paradoxically, retail trade associations frequently support the laws. Discuss the reasons for ...
Wednesday, June 18, 2008 at 10:33am by Dee

physics
Legend has it that Isacc Newton was hit on the head by a falling apple, thus triggering his thoughts on gravity. Assuming the story is to be true, estimate the speed of the apple when it struck Newton.
Tuesday, November 22, 2011 at 8:06pm by taylor

physics
Legned has it that Isacc Newton was hit on the head by a falling apple, thus triggering his thoughts on gravity. Assuming the story is to be true, estimate the speed of the apple when it struck Newton.
Tuesday, November 22, 2011 at 6:30pm by taylor

physics
times involved: deacceleratin: 39.1/4 seconds sittn still: 22 seconds accelerating: 38.1/2.53 seconds distance traveled: time deacc*39.1/2 + timeaccelerating*39.1/2 avg velocity= distance traveled/total time. distance behind train: avgvelocitydifference*timetotalelapsed =(39.1...
Tuesday, September 27, 2011 at 4:20pm by bobpursley

physics
A) Action = Reaction (Newton's third law) B) F = M a (Newton's second law) C) Not enough information. You need to know the velocity of the pitched ball before it was hit. Whoever assigned the problem should know that
Thursday, October 20, 2011 at 9:59pm by drwls

Physics
Suppose you viewed a movie that was running backwards. You would see lots of odd things happen: streams would flow uphill, a diver would emerge upwards and go back to the diving board etc. If these backward moving events actually happened in nature, which principle or ...
Friday, February 20, 2009 at 4:27pm by Kate

world history
Thank you for using the Jiskha Homework Help Forum. Here are some other sites: 1. http://www.newton.cam.ac.uk/newtlife.html 2. http://www.newton.cam.ac.uk/newton.html 3. (bio): http://www-groups.dcs.st-and.ac.uk/~history/Mathematicians/Newton.html 4. http://galileoandeinstein....
Thursday, October 18, 2007 at 6:04pm by SraJMcGin

Physics
Wb = m*g = 4kg * 9.8N/kg = 39.2 N. = Wt. of block. Fb = 39.2N @ 0o = Force of block. Fp = 39.2*sin(0) = 0 = Force parallel to surface. Fv=39.2*cos(0)-Fap*sin45=39.2-0.707Fap. = Force perpendicular to surface. Fap*cos45-Fp-Fk = ma. 0.707Fap-0-0.3(39.2-0.707Fap)=ma=m*0=00. 0....
Saturday, December 15, 2012 at 7:28pm by Henry

phy
There is always the possibility of learning more. For example Newton's Laws of motion are established science but must be modified since the 20th century discovery of Special Relativity for speeds close to that of light.
Tuesday, May 31, 2011 at 9:28am by Damon

Physics
mg = (4kg)(9.81m/s^2) = 39.24N. @ 60deg m = mass in kg. g = acceleration due to gravity. Fp = mgsin60 = 39.24sin60 = 34N = Force parallell to plane. Fv = mgcos60 = 39.24cos60 = 19.62N = force Perpendicular to plane. F = Fp + u*Fv = 34 + 0.3*19.62 F = 34 + 5.89 = 39.89N ...
Sunday, January 2, 2011 at 2:23pm by Henry

English
Albert Einstein (1879-1955) He is an American physicist. He reported "General Theory of Relativity" in 1916. He won a Novel Prize in 1921. Issac Newton(1642-1727) He discovered "the Law of Universal Gravitation" and "the Three Laws of Motion" - ...
Tuesday, August 11, 2009 at 9:26am by John

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?
Wednesday, October 24, 2007 at 9:50am by jorge

physics
Q2. A box rests on the (frictionless) bed of a truck. The truck driver starts the truck and accelerates forward. The box immediately starts to slide toward the rear of the truck. Discuss the motion of the box, in terms of Newton’s laws, as seen (a) by Mary standing on the...
Wednesday, November 14, 2007 at 12:08am by beckii

science
Newton applied his laws of motion to the problem of the motions of the planets. He assumed that it was gravity that held them in their orbits, true false Just need to know if my answer or right or wrong. Thanks! :) true
Wednesday, August 18, 2010 at 7:12am by ant

Astronomy
The speed of light is the same for all observers, and the laws of physics are the same for all observers in uniform motion. These two statements are fundamental postulates of A) general relativity B) Newtons laws of motion C) special relativity D) the laws of electricity and ...
Sunday, March 28, 2010 at 3:26pm by Anonymous

math
A % sign means the number of parts of 100. So 39% is 39 parts out of 100 or 39/100. Move the decimal point two places to the left and omit the % sign. 39% = 0.39
Wednesday, January 30, 2008 at 10:16am by Ms. Sue

chemistry gas laws
39 Pa for each of 4 blowers; 26 Pa for each of 6
Monday, December 4, 2006 at 8:42pm by Dan

ethics question
how HIPAA, GLB, and COPPA laws can help ensure people's privacy. What is their ethical justification? Is there gray area in these laws? How do some businesses try to find their way around these laws?
Sunday, November 7, 2010 at 10:26pm by Anonymous

Laws of Motion
A student stands on a scale in an elevator that is accelerating at 2.8m/s^2. If the student has a mass of 94 kg, to the nearest newton what is the scale reading?
Sunday, February 27, 2011 at 3:21pm by James

physics
V^2 = 2gd = 2 * 9.8 * 2 = 39.2m. V = sqrt(39.2) = 6.26m/s.
Wednesday, January 19, 2011 at 12:43am by Henry

physical science
which of newton's laws (1, 2, or 3)are used in the following: 1) spaceship reaches the speed for orbit around the earth, 2) pushing the shuttle forward in space 3) the force needed to escape earth's atmosphere
Friday, December 31, 2010 at 2:30pm by anonymous

physics
A chair of weight 150 lies atop a horizontal floor; the floor is not frictionless. You push on the chair with a force of = 36.0 directed at an angle of 40.0 below the horizontal and the chair slides along the floor.Using Newton's laws, calculate , the magnitude of the ...
Monday, December 14, 2009 at 7:52pm by jj

physics
A chair of weight 150 lies atop a horizontal floor; the floor is not frictionless. You push on the chair with a force of = 38.0 directed at an angle of 41.0 below the horizontal and the chair slides along the floor.Using Newton's laws, calculate , the magnitude of the ...
Wednesday, September 23, 2009 at 2:59am by Mary

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