First Law
What is Newton's First Law?
An object at rest stays at rest and an object in motion stays in motion unless acted on by an outside force!!!!!
What is Newton's Second Law?
The force of an object depends on that objects mass and acceleration...
What is Newton's Third Law
For every action, there is an equal and opposite reaction. Push....Pull
What is a force?
A push or pull in a given direction
If I push Wyatt with a greater force than he pushes me, what happens?
He falls to the ground.
LITTLE!!!!!!!
If a car is standing still and gets moved by another object, what can we say about this car?
It experienced Newton's First Law...
What is acceleration measured in?
Meters per second
What two forces affect gravity?
mass and distance
What are the four types of friction?
Sliding
Rolling
Fluid
Static
If I push a box with 30N and it does not move, how much is friction pulling the box in the opposite direction?
30N
If an object is at rest, what do the forces acting on this objest have?
O Newtons
Why is it harder to pick up a 55 lb dumbbell vs a 10 pound backpack?
It requires a much greater force to pick it up and cause it to move...... F=MA
........
What is the difference between weight and mass?
Weight depends on gravity... changes from planet to planet.
Mass is how much matter something takes up. Remains the same.
A force that is exerted on an object where the net force is 0 is an unbalanced force
FALSE
Because inertia deals with something wanting to remain moving or remain at rest... Which is exactly what the first law deals with .
What is the force of an object that weighs 870kg and travels at 3m/s
2610 kgxm/s
A person is standing in a bus. When the bus starts moving forwards, what happens to the person?
The person moves backward...
What is motion?
How can things of different mass have the same momentum? Remember momentum depends on Force.
The can have different accelerations...
Golf Ball vs. Bowling Ball
What are two examples of things that have high inertia and things that have low inertia?
High: Semi Truck, Tank, Helicopter, Train, etc
Low: marble, bouncy ball, Skateboard, Scooter, etc
What is the acceleration of an object that has a mass of 1000kg and the force required was 250N
.25m/s
Newton's Third Law deals with the Law.....
Then explain the law...
Of Conservation of Momentum....
Energy cannot be created or destroyed, only transferred between objects.
What is air resistance?
The resistance of an object to fall based on the molecules in the air/atmosphere pushing back on an object as it is falling.
If a golfball has a mass of 2kg and an acceleration of 3800m/s and a bowling ball has a mass of 300kg and an acceleration of 10m/s, which has the greater momentum and how much more?
THE GOLFBALL!!!!!!
7600-3000=4600