The Forces Are With Us Flashcards
(17 cards)
What can forces do?
It can change the shape direction or speed if something
What are two types of forces
Contact
Non contact
What is a contact force?
A force that needs to touch the object before it can affect it
What is a non contact force
A force that affects a object from a distance
What are examples of non contact forces
Magnetism
Static electricity
Gravity
What is gravity
Two objects that have a force of attraction between them.
What can static electricity attract
Charged things
What are the 4 forces that affect a diver when diving
Backward force:water resistance
Forward force:legs
Downward:gravity
Upward:up thrust
How do we measure forces
A force meter
How does a force meter work?
What is the units for measuring forces
Newton (N)
What is weight?
The force of gravity pulling on you
What is mass
The amount of matter in an object
The units for measuring mass
Grams and kilograms
If Ahmad’s mass is 30kg.
What would be his weight on earth.
300 n
If Ahmad’s weight is 300 n
What would be his weight on the moon?
50 newtons
If Ahmad’s mass is 30kg.
What would be his mass on the moon.
30 kg
Mass does not change.
