Year 7 Forces Flashcards
What does gravity do?
Pulls things towards the ground.
What is the unit for a force?
Newtons.
What is a force?
A force is a twist, pull or push.
What force creates heat?
Friction.
Who discovered gravity?
Sir Isaac Newton
What force moves things forwards?
Push.
What force helps rockets leave earth?
Thrust or upthrust.
What are the equations to make speed, distance and time?
Time x distance = speed
Speed x time = distance
Distance x speed = time
How many forces are there?
6
If I dropped a ball to the ground on a smaller planet than earth, would it fall slower or faster?
It would fall slower, as there is less mass for gravity to work on.
What is a non contact force?
A force that works on its own accord. Without needing any physical contact.
If one force was pushing a ball 5 Newton’s to the left, and the other was pushing 7 Newton’s to the right, what way would the ball roll?
Right.
What is a contact force?
A force that needs physical contact to work.
How many types of variables are there?
There are 3.
How many Newton’s would it take to reach the limit of a newton meter?
It varies.
