All about Physics
all motion is r______
relative
a point against which motion is measured is called what?
If an object is in motion what is changing?
position
The change in an object's velocity over time is ________
acceleration
Write the equation for: Finding the speed of an object
distance/time or d/t
position
The distance an object travels plus the direction from the starting point.
Displacement
This tells how quickly an object moves in relation to a reference point.
speed
Which quality is acceleration?
Vector quality
Write the equation you would use to find the relative speed of objects traveling in the same direction.
When objects travel in the same direction, their relative speed is the difference between their individual speeds.
relative speed = speed of object 1 - speed of object 2
The science of _______ is the branch of physics that deals with analyzing and understanding objects in motion, the forces applied to those objects, and the energy that exists in them.
mechanics
A physical measurement that contains both magnitude (number) and directional information.
Vector quantity
This tells how and in what direction an object is moving in relation to a reference point.
Velocity
Acceleration can either ____________ or ___________ an object depending on its direction.
speed up or slow down
Write the equation for:
ACCELERATION
final velocity - initial velocity / time or
v f - v i / t
Name one famous physicist.
Archimedes, Galileo, Kepler, Newton, Einstein, Schrodinger, Feynman
A physical measurement that contains only magnitude (number) and does not contain directional information.
Scalar quantity
The ratio of the total distance traveled to the total time of the trip is called what?
Average speed
speed, direction, both
Write the equation you would use to find the relative speed of objects traveling in opposite directions.
When object travel in the opposite directions, their relative speed is the sum of their individual speeds.
relative speed = speed of object 1 + speed of object 2
Physics investigates the laws that govern these six things:
space, time, forces, motion, matter, and energy
Which famous philosopher listed the presence of motion as an argument for the existence of God saying, "in all of our experience, humans have found that motion cannot occur without a mover."
Saint Thomas Aquinas
The rate at which an object is moving at a given moment is time is referred to as what?
Instantaneous speed
What kind of graph shows acceleration?
speed-time graph
Write equation and solve:
A car travels 92 miles down the highway. It takes the car 1.6 hours to travel that far. What is the average speed of the car in meters per second (1,609m = 1mi, 3,600s = 1 h)?
v=d/t
v=128,720m/1.5h = 85,813.33 m/h