Newtons laws
What is Newton's first law of motion commonly known as
Newton's first law is the Law of Inertia
Which form of energy is produced when you pluck the strings of a guitar
Sound energy. This form of energy is created by vibrations that travel through a medium, such as air
What are the two fundamental states in which all energy exists?
Kinetic and Potential
What term describes any push or pull that can change the motion of an object?
Force
If two equal forces are pushing an object from opposite sides, what is the net force acting on that object?
0
what is newtons second law
F=ma
What form of energy is stored in the bonds of food, batteries, and gasoline?
Chemical energy.
Describe the main energy transformation that occurs when a person burns wood in a fireplace.
the chemical energy in the wood is turned into heat and light
Newton’s First Law is often called the Law of ________.
Inertia
A book is resting perfectly still on a desk. Identify the two primary forces acting on it and explain why they are considered balanced.
the table and gravity
A book is resting on a table. According to Newton's third law of motion, what is the equal and opposite reaction force to the force of the book pushing down on the table?
The equal and opposite reaction force is the force of the table pushing upward on the book
When you turn on an electric toaster, what are the primary energy transformations taking place?
Electrical energy is converted into thermal energy
What is the key difference between a renewable and a non-renewable energy source with examples of both
A non-renewable energy source, such as coal or oil, is used up faster than it can be naturally replaced and is finite. A renewable energy source, like solar or wind energy, is virtually limitless or can be replenished naturally on a human timescale.
What is the specific term for the overall force acting on an object after all individual forces (like friction, gravity, and applied force) have been added together?
Net force
Does an object in motion always have unbalanced forces acting on it? Explain your answer.
No. An object moving at a constant velocity (same speed and same direction) has balanced forces acting on it.
An object with a mass of 5 kg is being pushed to the right with a force of 20 N. Simultaneously, a friction force of 5 N opposes its motion to the left. what is the acceleration and the direction
15N to the right
In the context of the Law of Conservation of Energy, if energy is never "lost," why do machines like car engines or lightbulbs eventually "lose" efficiency and stop performing work?
it is converted into thermal energy (heat) due to friction or electrical resistance and become waste energy
difference between nuclear fission and nuclear fusion
nuclear fission is splitting and nuclear fusion is combining
In the context of Newton’s Second Law, which term describes the "quantity of motion" an object has, calculated by multiplying its mass by its velocity?
Momentum or Newtons second law
If an object is experiencing an unbalanced force, what specifically happens to its motion according to Newton's Second Law?
It will accelerate
A 60 kg skydiver is in freefall. They experience a downward gravitational force of approximately 588 N, but an upward air resistance force (drag) of 450 N. Will the skydiver continue to speed up indefinitely
No
How does Gravitational Potential Energy change as an object falls, and what specific form of energy does it transform into?
As an object falls, its Gravitational Potential Energy decreases because its height above the ground is decreasing. According to the Law of Conservation of Energy, that stored energy isn't lost; it is transformed into Kinetic Energy, which is why the object moves faster and faster as it gets closer to the ground.
what has more energy a frozen lake or a boiling pot of water
boiling water
In the context of a skydiver falling through the air, what is the vocabulary term for the state where the upward force of air resistance exactly equals the downward force of gravity
This state is called terminal velocity
If a car is driving around a sharp curve at a perfectly constant speed, are the forces acting on it balanced or unbalanced?
Unbalanced