Forces
What are the three types of forces?
Friction, Gravity, Normal Force
What are balanced forces
2 equal forces pushing in opposite directions
What is Inertia?
Things that are still will stay still
What is the formula for this law
F=MA
What is newtons 3rd law?
Every action has an equal and opposite reaction
What is a force?
A push or pull of any object
What are they equal in?
Size and directions
What is newtons first law?
An object at rest stays at rest, an object moving stays moving
What is newtons 2nd law?
The more force you use the more something speeds up. The heavier something is the harder it is to move
What is Newtons 3rd law also known as
Law of action and reaction
What are the ways a force can accelerate?
Starts moving, Moves faster, stops moving, moves slower, change of direction
What do they NOT do?
Cause a change in motion because the two forces cancel each other out
True or false:
A force is a vector
True
What does F=MA stand for
Force=Mass times Acceleration
describe the reaction from the action:
A bat pushes a ball to the right
Reaction is Ball pushes bat to the left
What are forces measured in?
Newtons
What happens to an objects motion when forces are balanced?
The net force is zero
True or false:
Forces can be only balanced
False
If you double the net force on an object what happens to the acceleration?
The acceleration doubles
Describe the action from the reaction
water pushed fish forward
fish pushes water backward
What scientist are newtons named after?
Isaac newton
Give an example of balanced forces
Tug of war
Two teams pull with the same strength in opposite directions
Force left = Force right
give an Example of newtons first law
A soccer ball keeps rolling until someone stops it
Give an example for newtons 2nd law
Pushing a shopping cart:
it moves faster if you push harder but a full cart is harder to move than an empty cart
Who discovered newtons 3rd law?
Isaac Newton