Unit Two
How are Mass and inertia related?
The more mass found in an object, the more inertia it contains and therefore the greater it is to resist change.
if a car has a mass of 1000 kg and the engine exerts a net force of 4000 N, what is the acceleration of the car?
4000 N / 1000 kg = 4 m/s²
So, the acceleration of the car is going to be 4 meters per second squared.
How can you know what a force is and the types of forces?
Gravity: This is the force that pulls objects toward each other. For example, it's what makes things fall to the ground.
How can you explain how a egg car relates to this unit?
When the car crashes, it stops suddenly. Newton's Second Law tells us that the force on the egg depends on how quickly it stops. If it stops too fast, the egg breaks. So, you want to design the car to slow down more gently.
How can you find the location charges of the subatomic particles and be able to Diagram different components of an Atom and their charges?
Protons p+: Positive charge, in the nucleus. Neutrons (n): No charge, in the nucleus. Electrons (e-): Negative charge, orbiting the nucleus. And then draw a small circle for the nucleus with p+ and n. - Circles around the nucleus for electron shells with e-.
How can you apply Newton's first Law of Motion?
An object at rest stays at rest and an object continues its state of motion until an external force acts on it.
A 5 kg object is subjected to a net force of 15 N. What is its acceleration?
a = 15 N / 5 kg = 3 m/s²
the acceleration of the object is 3 meters per second squared.
How can you distinguish and explain between balanced and a unbalanced force?
Objects acted upon by balanced forces stay at rest or move at a constant velocity. But unbalanced forces are forces that are not equal in magnitude and may or may not act in the same direction.
How can you use Newtons first law of motion to describe the relationship between net fore, acceleration, and mass?
No net force = no acceleration object will stay still or moves at constant speed. - Net force present = object accelerates. More force = more acceleration, And more mass = less acceleration for the same force.
How can you be able to calculate protons, Neutrons, and electrons for an element?
number of protons = atomic number. number of electrons = atomic number. number of neutrons = mass number - atomic number.
How can you use Newton's first Law of Motion to explain how inertia affects the motion of objects?
If nothing is pushing or pulling on an object, it will keep doing what it's doing either staying still or moving straight at a steady speed. This will explain why, for example, a book on a table doesn't move unless someone pushes it.
When a swimmer pushes against the wall of a pool, the wall pushes back with an equal and opposite force. Explain how this helps the swimmer move forward.
This will help the swimmer move forward because they exert a force on the wall. This means that the wall exerts an equal and opposite force back on the swimmer.
How can someone create a free body diagram?
Make a simple shape like a box or a dot to represent the object you choose. Think about all the forces acting on the object, like gravity pulling it down, the ground pushing it up, or any other forces. And then Draw your arrows to show each direction. Lastly label the areas.
How can you explain how to minimize force on an object to during a collision.
Slow down the impact by Making the collision take longer. For example, crumple zones in cars do this by bending and absorbing energy, which slows down the crash, and you can also Use soft materials: Use things that can absorb the energy of the impact. For example, airbags in cars inflate to create a cushion, which helps to reduce the force on you.
How are you able to determine the atomic number and mass number of an element?
So, the atomic number tells you the number of protons, and the mass number gives you the total number of protons and neutrons.
How do you understand and also calculate net force using mass and acceleration?
The net force can be calculated using Newton's second law, which shows that F = ma, where:
If you jump off a small boat into the water, explain how Newton's Third Law affects the boat's motion.
By jumping it will push the boat the opposite direction.
Explain Newtons 2nd law?
The acceleration of an object is directly proportional to the net force acting on it and it being proportional to its mass.
How do you know how to create a Bohr diagram and describe all the locations in the energy levels of specific elements?
you need too first determine the number of protons, neutrons, and electrons for the element using the periodic table. Then you need to place protons and neutrons in the nucleus, and arrange electrons in energy levels starting from the closest to the nucleus
How do you find out how to calculate force of gravity on an object?
If you use the formula, force of gravity = mg, where m is the mass of the object and g is the acceleration of the object due to gravity. Since g is always 9.8 m/s2, just multiply the object's mass by 9.8 and you'll get its force of gravity
A book rests on a table. Describe the action-reaction force pair involved in this scenario.
The books weight is acting downward, and that is the action, and the upward normal force by the table is the reaction.
How can I know Newtons 3rd Law?
For every action, there is an equal and opposite reaction." This can mean when like one object exerts a force on a second object, the second object exerts an equal and opposite force on the first object.