LESSON 6: LAWS OF MOTION Flashcards
It is the movement or change in location of an object over time; often described in terms of direction, location, and speed.
Motion
the actual path traveled by an object
Distance
indicates the length as a straight line from the initial to the final position of an object
Displacement
measures the distance traveled over time
Speed
represents the ratio of displacement and time
Velocity
What is the equation for calculating Velocity?
v = d/t
a vector quantity that measures the rate of change of
velocity
Acceleration
What is the equation for calculating Acceleration?
a = final velocity - initial velocity/time
described by magnitude alone
Scalar quantity
described by both magnitude and
direction
Vector quantity
What are the two types of quantity under Acceleration?
Scalar and Vector quantity
the acceleration of a circular motion
Centripetal acceleration
It is always in the direction of the circle’s center, and the speed of the object along its circular path is
constant
Centripetal acceleration
usually referred to as “smooth plane”, in the real world, friction
still exists at the microscopic level of the said surface
Frictionless surface
It does not mean that an object has no mass but the mass of the said object is much less than the other forces involved in a system in the study
Massless body
the laws of physics simply give us the ability to predict/calculate different physical phenomena but these are intelligent estimations only.
Principle of “idealized models”
a small part of the big universe on which the scientists choose to
focus their study on, wherein some factors in the real world are excluded in order to make the study more focused and easier.
Idealized model
This individual developed the laws of motion to provide conceptual and mathematical foundations for the interaction of objects on Earth and beyond. The central theme of these laws is how forces affect the state of motion of any object.
Sir Isaac Newton
an object at rest will remain at rest, an object in motion continues in motion with the
same speed and the same direction unless acted upon by an unbalanced force.
Law of Inertia - the first Law of Motion
the push or pull upon an object resulting from its interaction with
another object.
Force
Force is measured in terms of?
Newton(N); 1N=1kg. m/s2
the two equal forces that act on an object in opposite directions; the sum of these forces is zero, thus, there is no change in motion
Balanced force
equal forces in opposite directions produce no motion
Balanced force
The sum of all the forces along
the x-axis is zero.
∑Fx = 0
The sum of all the forces along
the y-axis is zero.
∑Fy = 0
one of the two forces
acting upon an object is greater than the other; the object moves in the direction of the greater force; the sum of these forces
is not equal to zero. Thus, there is a change in motion.
Unbalanced force
Unequal opposing forces produce an ? causing motion
Unbalanced force
Acceleration is produced when a force acts on a mass. The greater the mass (of the object being accelerated) the greater the amount of force needed (to accelerate the object).
Law of Acceleration - the Second Law of Motion
What is the equation for finding the total force?
∑F = ma
F in the equation is equal to?
total force - in Newton (N)
m in the equation is equal to?
the mass of an object (kg)
a in the equation is equal to?
acceleration (m/s2)
It is directly proportional to the net force and inversely proportional to the mass.
Acceleration
For every action, there is an equal and opposite reaction.
Law of Interaction - the Third Law of Motion
What are the Three Laws of Motion? (in order from first to third)
Law of Inertia, Law of Acceleration, Law of Interaction
What are the two types of forces under the Law of Inertia?
Balanced and Unbalanced forces
