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