College Physics Ch. 1-2
36 test answers
Unlock all answers in this set
Unlock answers 36question
Period
answer
The time for one complete cycle of a process that repeats. Abbreviated as a capital T. Measured in units.
Unlock the answer
question
Frequency
answer
The number of cycles of a periodic process that occurs per unit time. Abbreviated as f. Measured in Hertz.
Unlock the answer
question
What is an oscillation?
answer
...
Unlock the answer
question
What is the frequency of a pendulum when the period is less than one second?
answer
The frequency is always greater than 1 hertz.
Unlock the answer
question
Speed
answer
Rate of motion. Rate of change of distance from a reference point. The distance something travels divided by the time elapsed. Measured in meters per second.
Unlock the answer
question
Velocity
answer
Speed in a particular direction.
Unlock the answer
question
What is the difference between speed and velocity?
answer
Velocity is speed in a particular direction. Measured in meters per second.
Unlock the answer
question
Distance formula when speed is constant.
answer
...
Unlock the answer
question
What is a vector?
answer
A physical quantity that has both a numerical size (magnitude) and a direction associated with them.
Unlock the answer
question
What is a scalar?
answer
A physical quantity having only magnitude, not direction.
Unlock the answer
question
Vector addition
answer
The process process of adding two or more vectors together. The result of the vectors is called the resultant.
Unlock the answer
question
Acceleration
answer
Rate of change of velocity. The change in velocity divided by the time elapsed.
Unlock the answer
question
3 types of acceleration.
answer
Speed increase - linear Speed decrease - linear Direction change - centripetal
Unlock the answer
question
Centripetal acceleration.
answer
The acceleration of an object in a circular direction. Centripetal means 'center-seeking'
Unlock the answer
question
What is the relationship between acceleration and velocity when something moves in a circle with constant speed?
answer
It's acceleration is perpendicular to its velocity.
Unlock the answer
question
What is zero velocity?
answer
A situation in which no motion occurs.
Unlock the answer
question
Formula for velocity when acceleration is constant.
answer
...
Unlock the answer
question
What is 'g'?
answer
The acceleration due to the force of gravity. 9.80m/s^2. Abbreviated as 'g' Can be substituted for 'a' in acceleration equations.
Unlock the answer
question
Newton's first law/Inertia
answer
The tendency of an object in motion to remain in motion, or an object at rest to remain at rest, unless acted upon by a force.
Unlock the answer
question
Newton's second law and formula
answer
A force acting on a mass causes it to accelerate.
Unlock the answer
question
Weight/mass formula.
answer
...
Unlock the answer
question
Newton's third law
answer
To every action there is always an equal and opposite reaction: or the forces of two bodies on each other are always equal and are directed in opposite directions.
Unlock the answer
question
Force
answer
A push or a pull acting on a body. Usually causes some distortion of the body, a change in its velocity, or both. Force is a vector. Measured is the newton (N).
Unlock the answer
question
How many newtons is one pound?
answer
4.45 Newtons
Unlock the answer
question
How many pounds is one newton?
answer
.225 lbs
Unlock the answer
question
Weight
answer
The force of gravity acting on a body. Abbreviated W
Unlock the answer
question
Friction
answer
A force of resistance to relative motion between two bodies or substances in physical contact.
Unlock the answer
question
Static friction
answer
Friction when there is no relative motion between two objects.
Unlock the answer
question
For and object to move with constant velocity what has to happen?
answer
The net force on it must be zero.
Unlock the answer
question
Centripetal force
answer
Force directed toward the center of an objects path.
Unlock the answer
question
Newton
answer
The force that would give a mass of one kilogram an acceleration of one meter per second per second.
Unlock the answer
question
Weight formula
answer
...
Unlock the answer
