Physics Flashcards
_______ describes motion in terms of displacements, velocity and acceleration. It simply describe “how” an object moves.
KINEMATICS
______ is the study of force in relation to motion. It explain “why” an object moves.
DYNAMICS
Is the term used in physics for motion in a straight line. It is often described in terms of the three quantities: displacement, velocity and acceleration.
TRANSLATIONAL
_______ refers to the total length of path taken by an object in moving from its initial to final position.
DISTANCE
_________ refers to the straight-line distance between an object’s initial and final positions, with direction towards the final position.
DISPLACEMENT
______ how fast an object going. A scalar quantity that uses distance and is always positive.
•is the distance traveled by a body in a given time.
SPEED
______ how fast an object is going in a certain direction. A vector quantity that uses displacement and is can be positive or negative.
•Is the time rate of change in position. It is a displacement of a body in a specified time interval.
VELOCITY
is the rate of change of velocity because velocity is a vector quantity, a change in velocity can be change in magnitude, a change in direction, or a change in both magnitude and direction
Acceleration
________ always refers to acceleration in the direction opposite to the direction of the velocity.
DECELERATION
__________ is acceleration in the negative direction in the chosen coordinate system.
NEGATIVE ACCELERATION
Is a push or a pull exerted by an object on another. It is a vector quantity because it has both magnitude and direction.
Force
Force between two bodies that are in contact with each other is called ______ _____
CONTACT FORCE.
Force that acts even if the interacting bodies are separated by a distance is called _______ ______
NON-CONTACT or ACTION- AT-A-DISTANCE FORCE.
Was credited for being the 1ST to describe the massive objects and formulate the three laws of motion.
Isaac Newton
- the tendency for an object to resist changes in motion.
A moving object keeps moving.
An object at rest stays rest. - Mass is a measure of inertia. The greater the mass, the greater the inertia. The greater the inertia, the harder it is to change the state of motion of a body.
Inertia
The net force of an object is equal to the product of its mass and acceleration.
One newton is equal to the force required to accelerate one kilogram of mass at one meter/second².
Force
______ is a body on Earth is the measure of the force of gravity exerted by earth on it. It is a vector quantity and is always directed toward the center of the earth.
WEIGHT
____ is the amount of matter a body contain. It is a scalar quantity.
MASS
Every action has an equal and opposite reaction.
Law of interaction
- any motion involving a dropped object that is only acted on by gravity and no other forces.
Free fall
_________ means that the time required for the object to reach its maximum height equals the time for it to return to its starting point.
TIME SYMMETRY
_________ shows that at any displacement above the point of release, the speed of the body during the upward trip equals the speed during the downward trip.
SPEED SYMMETRY
