FORCE
GRAVITY
ACCELERATION
MOMENTUM
VOCABULARY
100
A push or pull can be called what?
A force
100
How are mass and weight different?
Mass can be neither created or destroyed and does not change. Weight is a measure of the force of gravity.
100
What is acceleration?
getting faster or slower
100
What is the unit name (or shortcut) for momentum?
(p)
100
What is it called when there are two equal forces in opposite directions, resulting in no movement
Balanced forces
200
What is the formula for force?
F=mass x acceleration
200
Explain what free falling is.
an object that is falling under the sole influence of gravity (no parachute or other resistance force involved)
200
What is happening during acceleration?
Changing state of motion.
200
What is the formula for momentum?
mass x velocity
200
What is a difference between negative and positive acceleration?
Positive acceleration is when the object get speed up and negative acceleration is when u are slowing down.
300
Give an example of combining forces
-Two forces going in the same direction - the total force equals the sum of the forces -Two forces in opposite directions - total force equals difference of the forces
300
What does the law of universal gravitation state?
It states that the force of gravity acts between all objects in the universe.
300
Explain what deceleration is.
Deceleration is negative accelerations (Such as using the brakes on a car to reduce the speed)
300
What is momentum a measure of?
How hard it is to stop a moving object.
300
What is fluid friction and give an example?
Object traveling through the air or water. Example: a plane traveling
400
What are three types of friction?
1. Sliding 2. Fluid 3. Rolling
400
What is the mass for acceleration rate for all free fall objects?
9.8m/s/s
400
What is the formula for acceleration?
V2 - V1 / T
400
Explain the Law of Conservation of Momentum?
The momentum of any system is constant. The sum of the initial momentum of the object is equal to the sum of the final momentum of the objects.
400
Explain frame of reference and give an example.
The description of motion always depends on some frame of reference. If you describe something that is moving, the frame of reference is somethings that is NOT MOVING. For example, sitting in a moving train and using a tree as a frame of reference. The largest frame of reference is the Earth because we rarely consider it as moving.
500
Describe both an unbalanced force and balanced force?
A balanced force is a force which has equal force to both sides. An unbalanced force is where one force is bigger than the other it is acting against
500
What does projectile mean and how is it connected to gravity?
An object that is thrown. When the object moves horizontally, the force of gravity pull it down.
500
What is difference between initial velocity and final velocity?
Initial velocity is the velocity at the beginning and final velocity is the velocity at the end
500
What are the names of Newton’s 3 laws of motion?
Law 1: Inertia Law 2: Force = Mass x Acceleration Law 3: Equal and Opposite
500
Describe what "reference point" is.
It is a place or object that is used for comparison to determine if an object is moving.
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