What is Inertia?
What is the definition of inertia?
An object that is balanced will stay balanced or moving at a constant speed until an unbalanced force acts upon it.
What will an object in motion do if it is touched by an outside force?
It will become unbalanced.
Why do people use seatbelts?
What is a push or a pull on an object?
A force.
What force pulls everyone and everything on the Earth everyday?
Gravity.
What property determines how much inertia it has?
Mass.
What is the total net force of a computer sitting on a desk?
0 newtons.
Why does an apple fall off a tree when shook?
Because of gravity pulling it down.
What do you call forces that are equal?
Balanced forces
What force pulls a magnet onto a refrigerator?
Magnetic force.
What object has less inertia, a bowling ball or a soccer ball?
A soccer ball.
If you pull a tablecloth from under a bunch of dishes, why do they stay still on the table?
Because of inertia (they want to just stay at rest).
Why do we not fly off of the Earth if it is moving so fast?
Because everything is moving in motion with the Earth.
What do you call the total amount of all of the forces acting on an object?
Net force.
When you are sitting down, two forces are pulling you up and down, what is the name for this force?
Normal force.
If you are in a car moving at a constant speed, then you take a sharp turn, is the force still balanced?
The forces will become unbalanced.
If a spaceship is in space and it turns off its engines, what will happen to its speed?
The speed will stay the same.
If you are driving in a car and you swerve left, what happens to your body?
It feels like it is going to the right.
What is a unit of measurment used to measure the strength of a force?
A newton.
What is a push force that reguires two objects to touch each other?
Contact force.
If you kick a soccer ball in space, what will happen?
The ball will keep going in that direction in the same speed forever.
If a person is riding a bike and they crash, why does their body keep going and fly off the bike?
Because it was in motion so it wants to keep being in motion.
What will happen to a drone if it stays in a moving car that is going at a constant speed?
It will stay still and move with the car.
At rest.
If two people are pushing a box in the same direction with the first one having 200 newtons of force and the second having 145 newtons, what will be the total amount of force happening to the box if they are pushing to the right?
It will be 345 newtons to the right.