Speed, Velocity, and Acceleration Balanced and Unbalanced Forces Newton's 1st Law of Motion Newton's 2nd Law of Motion Newton's 3rd Law of Motion
Motion is described as an object's movement.
Describe motion.
When balanced forces act on an object, the object does not move.
Describe what happens when balanced forces act on an object.
An object a rest will remain at rest until, and object in motion stays in motion at the same speed and in the same direction, unless acted upon by an unbalanced force.
What does Newton's 1st law state?
The second law states that the net force acting on an object is equal to the object's mass multiplied by its acceleration.
What does Newton's 2nd law state?
For every action, there is an equal and opposite reaction.
What does Newton's 3rd law state?
Speed is a measurement of how fast an object is moving, while motion describes how the object moves.
How is speed different from motion?
When unbalanced forces act on an object, the object tends to move in the direction of the greater force.
Describe what happens when unbalanced forces act on an object.
Inertia
An object's tendency to resist (not) change its state of motion is called ____________.
F= M x A
Force= Mass x Acceleration
What is the formula that is correlated to Newton's 2nd law?
the ball hits the bat
The bat hits a ball. What is the reaction force?
velocity; it provides the speed in a certain direction
Is 55 km./ hr. South an example of speed or velocity? Explain.
PAIRS!
Forces ALWAYS occur in...
Slows it down
What does friction do to a moving object?
24 Newtons
Solve the problem provided.

An object with a mass of 6.0 kg accelerates 4.0 m/s2 when an unknown force is applied to it. What is the amount of the force?
The chair pushes you up.
You sit in a chair. You push the chair down. What is the reaction force?
Speed= Distance/ Time
What is the formula used to calculate speed?
What is the formula used to calculate speed?
20 Newtons to the left.
There are two forces being exerted on a box. One force is pushing with 50 Newtons to the left and pushing with a force of 30 Newtons to the right. What is the net force and direction of the box's motion?
Mass
Objects with greater _________ also have greater inertia.
4 Kg
Solve the problem provided.

An object accelerates 5 m/s2 when a force of 20 newtons is applied to it. What is the mass of the object?
the same as
A bug hits a windshield. The force of the bug on the windshield is _______ the force of the windshield on the bug.
4.5 m/s
Use the speed formula (S= D/T) to solve the problem provided.

You arrive in my class 50 seconds after leaving math which is 225 meters away. How fast did you travel? Round to the nearest whole number.

0 Newtons; the object remains stationary.
There are two forces being exerted on a box. One force is pushing with 180 Newtons to the left and pushing with a force of 180 Newtons to the right. What is the net force and direction of the box's motion?
Easier
Objects with less mass are _____ to speed up or slow down.
3 meters per second squared
Solve the problem provided.

Jenny applies a 60 N force to a 20 Kg cart, what is the acceleration of the cart if friction can be neglected?
True!
True or False?

When you push on a wall, the wall pushes on you.

# Unit 3: Force and Motion

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