Physics Flashcards
Newton’s Law of Motion was formulated by ___________________
Sir Isaac Newton
body at rest will remain at rest and a body in motion will remain in motion
Law of Inertia
The body will move continuously unless a force is applied to stop it
Body in Motion
a term used to measure the ability of an object to resist a change in its state of motion
Inertia
The word 1) _______ comes from the latin word 2) _________ meaning 3) _____
1) Inertia
2) Inertus
3) Lazy
any action that has the ability to change an object’s motion
Force
directly proportional to the force (NET force) acting on it and inversely proportional with the mass of the body. When a body is at rest, some other body has to apply a push to make it start moving. When a body is in motion, some other body has to apply a pull to make it come to stop.
Law of Acceleration
the gravitational force with which the earth attracts the body
Weight
the quantity of matter in the body and the same everywhere
Mass
For every action force, there is an equal and opposite reaction force
Law of Interaction
There must be a force.
The object must move through a distance in the same direction
as the force.
Work
Energy cannot be created nor destroy, but can be transformed from one form to another
Law of Conversation of Energy
rate of doing work
Power
capacity to do work
Energy
the energy possessed by an object due to its position
Gravitational Potential Energy
pictures that show the size and direction of all forces acting on an object
Free-Body Diagram
Friction between two bodies in contact if there is no relative motion. An object will not slide or move if the coefficient of friction is greater.
Static Friction
One surface slides over the other.
An object will move if the coefficient of
friction is less than to hold the object.
Kinetic / Sliding Friction
a force that the string exerts on the object to which it is attached
Tension
force perpendicular to the surface of contact or the force makes a 90 degree with the surface of contact which along horizontal lines
Normal Force
actual force that is exerted and opposite to the applied force
Frictional Force
It is the downward non- contact interaction between the planetary body and an object it is attracting.
Gravitational Force
It is a unit that has a value 746 watts.
Horsepower
It is the rate of doing rate
Power
It is a state that when a change in kinetic energy occur, work is done.
Work - Energy postulate
When one body exerts a force on another body, the second exerts an equal force in the opposite direction on the first.
Third Law of Motion
It is also called inertia in motion
Momentum
It states that there will be a change in
momentum of a body when an external force acts on it.
Impulse-Momentum Theorem
If an unbalanced force acted on a body, acceleration is produced which is the directly proportional to the force acted on it and indirectly proportional to the mass of the body.
Second Law of Motion
Type of collision wherein the tvwo objects bounce after the collisions and the move separately with no change in kinetic energy.
Elastic Collision
SYSTEM
1)
2) CGS
3)
MASS
1) kg
2)
3) slug
ACCELERATION
1) m/s^2
2)
3)
FORCE
1)
2) g • cm/s^2 d
3) slug • ft/s^2 P
SYSTEM
1) MKS
2)
3) FPS
MASS
1)
2) g
3)
ACCELERATION
1)
2) cm/s^2
3) ft/s^2
FORCE
1) kg • m/s^2 N
2)
3)
Speed increases when the net force is in the same direction as the motion.
Speed decreases when the net force is in the opposite direction as the motion.
Direction of Acceleration
Newton’s third law discusses pairs of object and the interactions between them. The two forces in a pair are called _____________________
Action and Reaction
No 1. _______ is done if the object has
no 2. ______________ , even if the force was applied on it.
- work
- displacement
heavy or massive objects have greater momentum even if they are moving slowly.
Momentum
_________________ is used to quantitatively described the motion of an object.
Linear Momentum
________________ of an object of mass moving in velocity, is defined as the product of the mass and velocity
Linear Momentum
The word 1. ____________ plural
2. ____________ is a latin word and means movement or moving power
- Momentum
- Momenta
- German Scientist
- He defined progress as the quantity of motion with which the body proceeds with a center direction.
Gottfried Wilhelm Van Leibniz
- __________ is the product of the force and the time during which it acts. It is usually associated with 2. ____________
- Impulse
- Collision
States that the total momentum does not change if they are no net external forces acting at it. States that the total momentum before collision of bodies is equal to the total momentum after the collision.
Law of Conversation of Momentum
An interaction between two or more bodies
Collision
Two objects bounce after the collisions and they move separately with no kinetic energy
Elastic Collision
Two objects deformed during collision but the object moved separately after collision
Inelastic Collision
When the two objects collide and move together as one mass with a common velocity after collision both objects are deformed
Perfectly Inelastic Collision
kg/ kilogram
Unit of Mass
kg m/s
Unit for Momentum
It is the change in velocity per change in time
Acceleration
The center point of the object which the line of symmetry did not cross
Center of Mass
