Forces & Their Interactions
What is a force?
A push or a Pull on an object
What type of force is applied when pushing a door open?
Applied force.
Give an example of an applied force in everyday life.
Ex: Pushing a lawn mower, pushing a sopping cart, etc.
What role does friction play when you walk?
It prevents slipping and allows for movement.
What keeps the planets in orbit around the sun?
Gravity
Name two types of forces mentioned in the chapter.
Contact force and noncontact force.
Which force can act at a distance without contact?
Noncontact force (e.g., magnetism or gravity).
What happens to an object when an applied force is greater than friction?
The object will move.
UH OH....
- 200 Points to score... Next team plays.
How does gravity affect weight?
Weight is the force of gravity acting on an object’s mass.
What is the normal force?
The support force exerted on an object that touches another stable object.
What kind of force resists motion between two surfaces?
Friction
Can an applied force change the shape of an object?
Yes, it can deform or change the shape of an object.
How can you reduce friction between two surfaces?
By lubricating them with oil or grease.
Why do objects fall at the same rate regardless of mass?
Because gravity accelerates all objects equally.
How does gravity affect objects?
It is an attractive force that exists between all objects that have mass.
How can you identify a contact force?
It requires one object to touch another object.
Describe how applied forces can be beneficial in sports.
They help in scoring points, like kicking a soccer ball.
YAYYY!!!
+ 400 Points to score!
What would happen to gravity if the Earth were twice as massive?
The gravitational pull on objects would increase.
Describe how friction affects moving objects.
Friction is a contact force that resists the sliding motion of two surfaces that are touching.
What is the relationship between mass and gravitational force?
The greater the mass of an object, the stronger the gravitational force it exerts.
What determines the direction of an applied force?
The direction in which the object is pushed or pulled.
How does friction affect the speed of a moving object?
It slows down the object as it opposes motion.
How does the moon's gravity affect Earth?
It causes ocean tides.