explin why he eaqual action and reaction forces do not cancel each other when one person hits ths a ball?
87065
To slightly correct the previous answer, the 2 opposing forces are on different bodies. The ball experiences an outward force, and the bat an inwards force. Its the complete system that experiences cancelling forces, not the individual bodies participating.
145884
Newtons 3rd Law,\nFor every action, there is an equal and opposite reaction.\n\nSo all of the instances given, there is both an action and reaction force occuring.
188872
There is no such thing as an unbalanced force in physics because of Newton's Third Law: for every action, there is an equal and opposite reaction. So for every force that exists, there has to be an opposing force that balances it out.
844798
For every action there is an equal and opposite reaction.\n\nThe smaller object gets busted, as is your question.
1051135
no because it takes more power to hit the ball so a stndstill amount of force woukd not work on a fast ball
84559
Both marbles will hit the ground at the same time, but one will roll along farther.\n\nIn short, the vertical force from gravity is the same for both marbles.  The one hit sideways just has an additional horizontal velocity in addition to its vertical acceleration.
718143
No, they actually don't come into contact with each other (unless electrons move, in which case you get shocked). In physics, this is why there are very few true contact forces. You see, stable atoms don't like being disturbed. When you press two neutral, happy molecules against each other they stay seperate and even force each other apart. The closer they get the more they push each other away. Its a very strong force. This is why you can't pass your hand through objects. :)
863529
I know what you're asking for, but I don't think I can give you a great answer.  The best way I can think of answering your question is that you are trying to make contact with the ball; you are trying to strike it with the bat.  You swing and miss or do not swing at a potential good pitch, which will equal to your first attempt of striking the ball.\n\nHa ha ha.....not sure if that's true, but after I read this, surprises me..sounds like it's the right answer.
749210
For every action force there is an equal and opposite reaction force.\n\nThe force your oars apply to the water creates a reactionary force of the water to your oars.  Since the oars are a part of your boat, the boat pushes forward.
862752
This question deals with either conservation of enregy, or conservation of momentum. In this case it will be easier to go with momentum, so that's what I'll do.\n\nThe momentum before an event will equal the momentum after the event. In this case, the momentum before the event equaled zero, so the momentum after must equal zero also.\nIf the ball has a momentum of (.350kg)(28m/s)=9.8kgm/s, then the man must have an equal and opposite momentum to cancel it: (65kg)(v)=-9.8kgm/s. Since we now know the mans mass and momentum, figuring out his velocity is simple:\n(65kg)(v)=-9.8kgm/s\nv=-0.15m/s
756287
Yes, Kaplan is correct.  While the ball is being thrown it is accelerating (not necessarily at 15 m/s2) up to a velocity of 15 m/s.  Once the ball is released the only force acting on it is gravity at -9.8 m/s2.
1098055
simple... when the ball was passed to the other player a korren defender touched the ball.. practily the korrean defender passed de ball... look carrefuly at the replays and u'll see
733139
It follows Newton's law that for every action there is an equal and opposite reaction.  It's usually a wheeled vehicle that flings something backward in order to move forward.  The simplest type uses the jet of air escaping from an inflated balloon.
390758
An example is that a base ball will travel much farther than a wiffle ball, when hit with the same amount of force, because the baseball has more mass than the wiffle ball. Its greater mass will give it a greater acceleration even though the force remains constant.\nAnother example is that a heavier bat will hit the ball farther than a lighter bat, even if they are swung with the same amount of force.
719433
Newton's Laws:\n1.  An object at rest stays at rest, and an object in motion stays in motion unless acted upon by an external force.  In tennis, balls will continue to fly toward you or at your opponent unless it is either returned or hits the fence behind you (or your opponent).  Of course, there's also gravity and wind resistance slowing down the ball, but the jist of this law says that the ball isn't going to spontaneously change directions on you.\n\n2.  F = ma (force).  A ball will hit you (or that unsuspecing ballboy) with a force equal to its mass times the acceleration as imparted upon it by your opponent's racquet.  Likewise, you'd have to hit the ball with a certain amount of force in order to get it to reach a certain speed - imagine how much force Roddick puts on the ball when he's serving!\n\n3.  For every action there is an equal and opposite reaction.  When you hit a ball, there is a certain amount of force or vibration that you feel in the racket that tends to force your racket back.\n\nOther topics:\nFriction - there is a lot of friction involved in generating spin on the ball.  The friction comes from the strings and the ball.  It also comes in to play when the ball, with heavy backspin for example, hits the ground and bounces nearly straight up instead of towards your opponent.\n\nMomentum - found mathematically by multiplying mass and velocity.  In tennis, the faster the ball is moving, the more momentum it has.  The same can be said about your racket - generating momentum in your backswing and then transferring that to the ball is what it's all about.\n\nNow if you're looking to actually calculate some of these quantities, that'd be a pretty tall order considering all of the variables (i.e. surface area of the ball and the strings for friction, distance the ball travels for force, etc.).  But at least you have an idea as to where these different quantities come in to play.  Just don't dwell on it too much when you're trying to return a 145 mph serve!
83052
Forces occur in pairs. Newtons third law.\nIf this is the case the forces exist as equal and opposite.\n [Fo ]=[-Fi]\nNet force = Fo minus Fi= zero!\n  Moving forces can be directional and vectorial.\nAlso they change continueously during the motion till they Atenuate at the end of their cycle.To identify the force you have to identify the power that has cause the motion of the mass and the direction of interaction. The power causing the motion is always equal to the magnetude of the force multiplied by the the speed that the force moves.\n\nCurvilenear motion indicates that the power of two moving masses interact and cause the two masses to move around a common pivot point. Thus the masses are locked together into an orbit forming a composite mass structure.In that case the moving masses experience a curved path.\nThan you have to understand what is  a circle. A circle consists of an infinite integral of short straight lines, and each straight line having different direction.\n\nDont feel bad if you cant fully understand why. . I dont find it easy myself.
857410
Actually, the wall having no K.E. is okay, since the speed of the ball is the same before and after the collision. Momentum IS transfered to the wall and the earth supporting it but the mass of the wall (and earth) is so great that the corresponding change in velocity is undetectable...