Chapter 1
In expressions like Δv and Δt, Δ stands for
"change in"
Motion in a circle at constant speed is motion with constant velocity.
False
A body at the end of a spring oscillates up and down ten times in five seconds. The period of oscillation is
2s.
What is the period of a signal that has a frequency of 60Hz.
60s^-1
An object moving in a circle undergoes
Centripetal acceleration
A vector quantity has only a magnitude and no direction associated with it.
False
If an object's speed is constant, its velocity must also be constant.
False
Motion in a circle at constant speed is motion with constant acceleration.
False
The metric prefix that means one thousand is milli-.
False
The number of cycles of a periodic process that occur per unit time is called the period.
False
The proper abbreviation for 'seconds' is 'sec.'
False
The terms velocity and speed have identical meanings in physics.
False
Uniform motion is any motion at constant speed
False
Frequency
The number of cycles of a periodic process that occur per unit time
Velocity
The slope of a distance vs. time graph
Acceleration
The slope of a velocity vs. time graph
Period
The time for one complete cycle of a periodic process to take place
If an object's velocity is constant, its speed must also be constant.
True
The proper abbreviation for 'grams' is 'g.'
True
The proper abbreviation for 'kilohertz' is 'kHz.'
True
The second is a metric unit of measure.
True
There are one thousand megabytes in a gigabyte.
True
Twenty milliseconds is 0.020 s.
True
Motion in a circle at constant speed is motion with a. constant acceleration b. constant velocity c. both of the above d. none of the above
d. none of the above
