What is the formula for force?
F= m x a
What is the Law of Inertia?
Newtons 1st law
For every action, there is an equal and ______ reaction.
Opposite
What Law is Action / Reaction?
Newton's 3rd Law
What are the units for force?
Newton
An object in motion stays in motion, an object at rest stays at rest until acted on by an outside force.
Newton's 1st Law
True or False: If an object at rest is acted upon by unbalanced force then the object WILL move.
TRUE!
A softball will not move unless it is thrown. Which of Newton's Laws explains this?
Newton's 1st Law
True or False: A shopping cart that is full of groceries would need less force than a shopping cart that is empty.
False!
What is the Net Force?

0 Newtons
What are the 3 hints I showed you for each law?
3rd: ________________
2nd: ________________
1st: _________________
3rd: 3E
2nd: F = MA
1st: 1nertia (spelled with number 1)
A box is pushed to the right across the floor. What force is causing it to slow down?
Friction
This law explains why a balloon flies around the room when you let it go without tying it.
Newton's 3rd Law
What is a force?
A push or pull
What is the unit for acceleration?
m/s2
A skateboarder hits a rock. The skateboard stops but they flied forward. Which law is this an example of?
Newtons 1st Law
A bowling ball collides with a set of bowling pins (at rest) with a force of 15N. What is the force the pins exert on the bowling ball?
15N
_______ is the overall force on an object when all the individual forces are added together
Net Force
If a heavier object needs more force to move than a lighter one, you’re seeing this law in action.
Newton’s 2nd Law (F = ma)
How much force is needed to accelerate a 66 kg skier at 2 m/sec2?
F = 132 Newtons
According to Newton’s Second Law, increasing the force applied but keeping the same mass has this result.
Increases acceleration of the object
If you want to increase the acceleration of a baseball when you throw it, what must you increase to make this happen?
Force
What is the name of Newton's 3rd Law?
Law of action and reaction!
What force stops a ball that is thrown in the air from flying up forever?
Gravity
A force of 20N acts upon a 5 kg block. Calculate the acceleration of the object.
4m/s2