Chapter 1 - Forces 1 Flashcards
Forces can change what?
Shape and speed
What are the contact forces?
Friction, air resistance, water resistance and upthrust
What are the non contact forces
Magnetism gravity and static electricity
What do we use to measure forces, and what unit?
Force meter, and Newton’s
Gravity is a force that…
Attracts objects towards each other
Weight is the force of gravity pulling things ——— the earth.
Towards
Weight is measured in ——— because it is a force
Newton’s
Mass is the amount of matter in something. The units for mass are ———- or ———-
Kilograms or grams
Gravity on the moon is ——— than on earth so an object on the ——- would weigh less than on ——- it’s ——- would be the same.
Weaker
Moon
Earth
Mass
What is a contact force?
A force that needs an object to touch it before it can affect something
What is a non contact force?
A force that can affect something from a distance
Name a force which pulls you down
Gravity
Name a force that helps to hold things to fridge doors
Magnetism
Name a force that needs to touch something to affect it
Contact force
Name a force that rubs things away
Friction