Effective Forces
Resistance to motion when two objects are in contact with one another.
Friction.
Every action has an equal and opposite reaction.
Newton's 3rd Law
Newton's first name.
Issac.
My symbol is this: F
Force
Which concept does this equation represent?: p = mv
Momentum
Force between two surfaces that are NOT moving past each other.
Static Friction.
- An object in motion will stay in motion unless a force acts on it.
- An object at rest will stay at rest unless a force acts on it.
Newton's 1st Law
Newton co-developed this branch of mathematics, which he called "fluxions."
Calculus.
Resistance an object feels when travelling through the air.
Air Resistance.
An object has a mass of 3 kg and an acceleration of 4.5 m/s2, what is the force exerted upon the object?
13.5 N
The attraction two objects have on one another which is directly proportional to their masses.
Gravity.
A net force acting on an object causes the object to accelerate in the direction of the net force.
Newton's 2nd Law
Newton's work in this field led to the development of the theory of universal gravitation, explaining the motion of planets.
Astronomy.
Force between a rolling object and the surface it rolls on.
Rolling Friction.
What is the momentum of a car with a mass of 1300 kg traveling at a velocity of 28 m/s?
36,400 kg·m/s
Microscopic bumps on surfaces that cause friction.
Microwelds.
A helicopter is hovering above a dense forest.
Newton's 3rd Law. The air exerts an equal upward force on the rotor blades, keeping the helicopter aloft.
Newton received this characteristically english honor in 1705 for his contributions to science, becoming Sir Isaac Newton.
A Knighthood.
My unit is this: kg·m/s
Momentum
An object with a momentum of 255.6 kg·m/s is traveling at 30 m/s. What is its mass?
8.52 kg
This occurs when the force of gravity and air resistance become balanced.
Terminal Velocity
A cyclist pedaling uphill with constant force experiences decreasing acceleration as the slope increases.
Newton's 2nd Law. The greater gravitational force opposing them reduces the net force, resulting in less acceleration, as per Newton's 2nd law.
Newton's most famous dispute was with this German mathematician over who invented calculus first.
Gottfried Wilhelm Leibniz
Air resistance is determined by these three factors...
1. Speed
2. Size
3. Shape
An object has a mass of 44.3 g and a force of 11 N, what is the acceleration of the object?
~248.3 m/s2