Don't Be Such a Drag
A force that results when the surfaces of objects rub against each other and opposes motion.
What is friction?
This is what causes motion.
What is force?
The only force that you do not need to push or pull something to get it moving.
What is gravity?
The tendency of an object to resist changes in its velocity?
What is inertia?
This force holds the nucleus of atoms together.
What is the strong nuclear force?
You push on a box and are unable to move it. This force is opposing your push.
What is static friction?
This is the SI unit for force.
What is a newton (N)?
The motion of an object when it is falling solely under the influence of gravity.
What is free fall?
Newton's second law of motion states this.
What is when an object is acted on by one or more unbalanced forces, the net force is equal to the mass of the object times the resulting acceleration
or
Net force = mass x acceleration?
This force plays a bigger role in particles breaking down or decaying.
What is the weak force?
Friction that opposes motion once the motion has already started.
What is kinetic friction or sliding friction or dynamic friction?
This is the net force of a pair of balanced forces.
This is the acceleration due to gravity for any object
What is 9.8m/s2 or 32 ft/s2?
A stopped up bottle of vinegar and baking soda demonstrates this law of Newton's which states this.
The electricity powering the appliances in your house are due to this force.
What are electromagnetic forces.
The frictional force that acts on rolling objects
What is rolling friction?
This happens when an unbalanced force acts on an object.
What is acceleration?
This is the formula used to find the distance an item fell from.
What is d = 1/2 x a x t2?
Flicking paper from under a coin demonstrates which of Newton's laws, and the law states this.
What is Newton's first law of motion - an object in motion or at rest will stay in motion or at rest until it is acted upon by an outside force.
This is the weakest of the four forces.
What is the gravitational force?
The friction force that acts on liquids or gases.
What is fluid friction?
This is the force required to make an object with a mass of 1 kilogram accelerate at 1 meter per second squared.
What is 1 Newton?
What is the height of a building, in meters, if it takes a dropped rock 4.1 seconds to fall from its roof?
What is 82.4m?
d=0.5x(9.8m/s2)x(4.1s)2=0.5x(9.8mx)x(4.1)x(4.1)=82.4m
An ice cube with the mass of 1kg slides down an inclined serving tray with an acceleration of 4m/s2.
Ignoring friction, this is the amount of force pulling the ice cube down the serving tray.
What is 4 Newtons?
F=mxa
F=(1kg)x(4m/s2)=4N
These two theories attempt to explain gravity.
What are the Quantam Gravity Theory and the General Theory of Relativity?