Newton's First Law
This law is also known as the law of _____
What is inertia?
Newton's third law refers to these equal and opposite things.
What are forces?
The force that attracts all objects on Earth to its center.
What is Fg, force of gravity?
An object that is not accelerating is in this state of being.
What is mechanical equilibrium?
Equilibrium also fine.
This force is Mr. U's favorite force
What is Fb, buoyant, buoyancy
The property of matter that describes a resistance to a change in motion.
What is inertia?
Mr. U picks up a 10 ton boulder using his knowledge of physics and also a giant crane, causing each to exert a force on another. When we compare the value of these two forces to each other, we know this about them.
What is the same, equal?
The force that resists motion across a surface.
What is Ff, friction?
If an object is experiencing no unbalanced forces, you know this about it's motion.
What is constant, unchanging, not accelerating, or the same?
This force is also thought of as a curvature of space-time, telling objects in space where to go and affecting their passage of time.
What is Fg, force of gravity?
The typical unit of measurement for inertia in the metric system.
What is grams, g, kilograms, kg?
The Earth and Moon gravitationally attract one another with the same force. The Moon changes its motion more than the Earth because of this specific property of the Moon.
What is it's smaller mass, smaller size?
The force that is perpendicular to the surface it originates from.
What is FN, normal force?
What is the quantitative FBD for Spidey sitting down?
FN up, Fg down, both equal to 730 N and each other.
This theory of gravity begins with the assumption that inertial masses / accelerations and gravitational masses / accelerations MUST be the same thing.
What is Einstein's theory of general relativity?
Just general relativity is also ok.
People once thought (and many still do!) that objects have a natural tendency to come to a stop, due to these two forces.
What are drag and friction?
Air resistance instead of drag is acceptable too.
These two words make Mr. U sad when people try to use them to explain Newton's 3rd Law.
What are "action" and "reaction"?
The label for the force that airplanes exert in order to move over drag / air resistance.
Fth, FTh
What is the qualitative FBD for Spiderman hanging from 4 wires?
What is Fg down, 4 upward vertical tension components, 2 leftward horizontal tension components, and 2 rightward tension horizontal components
This is Mr. U's favorite Japanese Solar Neutrino research facility.
What is Super-Kamiokande?
A roller skater is at rest on the subway, and you are on the subway platform watching them. As the subway starts to take off, you notice the skater does this.
What is stay still?, stand in place?, not move?, etc.
Newton's 3rd Law can also be expressed as a conservation of this kinematic property.
What is momentum?
The four fundamental forces.
What are gravity, electromagnetic, strong (nuclear), and weak (nuclear)?
The value of the normal force for Peter Parker at rest at an angled incline.
What is ~748 N.
I'll accept anything from 745 - 752
This is Mr. U's favorite galaxy
What is the sombrero galaxy?