A net force is the remaining force that produces any acceleration of an object when all opposing forces have been canceled out. Opposing forces decrease the effect of acceleration, lowering the net force of acceleration acting on an object.
In nature, every force is opposed by other forces, such as friction or opposing gravitational forces. Forces can produce acceleration only if they are greater than the total opposing forces. If a force pushes an object but is matched by friction, the object does not accelerate. Likewise, if a force pushes against gravity but is less than the gravitational force on an object, it does not accelerate. For example, if a 15-Newton push on an object is opposed by a 10-Newton friction force, the object accelerates as if pushed by a 5-Newton net force without friction.Learn More
As of 2014, the title "Father of Physics" has not been given to a single scientist. Isaac Newton, Albert Einstein, Galileo, Thales of Miletus and Aristotle, however, are some of the scientists who are greatly remembered for their noteworthy contributions and are among the great contenders for the title.Full Answer >
Universal gravitation is the name given to the law that Isaac Newton devised to explain the gravitational attraction between two massive bodies. Essentially, it states that the force of gravity is proportional to the sum of the combined mass of the two bodies, divided by the distance between them squared. While Newtonian physics are no longer what modern physicists use, its predictions and accuracy were accurate for objects on Earth.Full Answer >
The law of conservation of momentum can be stated as, "When two separate objects collide with each other in an isolated system, the total amount of momentum of the two objects prior to and after the collision would remain the same." It can be mathematically described as m1*?v1 = -(m2*?v2), where the negative sign before the right-hand term is used to indicate change in direction.Full Answer >
Measure the overall change in the position of an object after movement comes to a stop. Distinguish displacement from distance by understanding that traveling a certain distance can leave the object very close to where it started.Full Answer >