Phisics Flashcards
What is the definition of a force?
A push or a pull that can make things move, stop, or change shape
Forces are all around us and play a significant role in the behavior of objects.
What are the common types of forces?
- Gravity
- Reaction Force
- Friction
- Air Resistance
- Thrust
- Elastic Force
- Upthrust
- Magnetic Forces
Each type of force has distinct characteristics and effects on objects.
What does gravity do?
Pulls objects toward the Earth
Gravity is the reason objects fall when dropped.
What is reaction force?
When an object pushes on a surface, the surface pushes back with an equal force
An example is standing on the ground; the ground pushes up against your feet.
What effect does friction have on objects?
Slows objects down when they rub against something
For example, a book sliding on a table stops because of friction.
What is air resistance?
A type of friction caused by air
You feel it when the wind pushes against you as you ride a bike.
What is thrust?
A force that pushes an object forward
Examples include the engine of a car or a rocket.
What is elastic force?
Found in stretchy objects like rubber bands or springs
Stretching them causes them to pull back to their original shape.
What is upthrust?
The upward force from water or air that helps things float
Examples include boats or balloons.
What are magnetic forces?
The push or pull between magnets or between a magnet and magnetic materials like iron
This force can either attract or repel objects.
How do forces affect objects?
- Move
- Stop
- Change Direction
- Change Shape
For example, a kick starts a ball rolling, while pressing on clay changes its form.
What models do we use to think about forces?
Drawing arrows to show their direction and strength
A longer arrow represents a stronger force.
True or False: Forces can only make objects move.
False
Forces can also stop objects, change their direction, or change their shape.
Fill in the blank: _______ is the force that slows objects down when they rub against something.
[Friction]
Fill in the blank: The upward force from water or air that helps things float is called _______.
[Upthrust]
