Exam 2: Waves and Sound

Displacement divided by time gives

The direction of the acceleration of an object moving in a circle at constant speed is

An automobile traveling on a straight, level road at 15 km/h speeds up to 90 km/h in 30 s. What was the magnitude of the auto's acceleration, in meters per second squared?

Motion necessarily involves

If the magnitude of the velocity of an object increases, we may be sure that during the time of this increase,

Distance is a(n) ______________ quantity.

Because of air resistance, an object falling a great distance may reach a ______________ velocity.

A rifle bullet shot horizontally has a vertical acceleration of ______________.

Free-fall motion neglects ___________________.

Physics deals with force, energy, motion, and ________________.

The magnitude of the acceleration of an object moving in a circle at constant speed is

Physics deals with matter, motion, force, and ________________.

______________ acceleration is necessary for uniform circular motion.

For an object in uniform circular motion, the acceleration points toward ______________.

Temperature is an example of a(n) ______________ quantity.

The rate at which an object's velocity changes with time is called its

A student travels from St. Louis to Indianapolis, a distance of 210 mi, in 6.0 h. The return trip over the same route takes 7.0 h. What is the average speed for a. the first half of the trip? b. the second half of the trip? c. the total trip?

The distance a dropped object travels is proportional to the ______________ of the time.

In free fall, the _______________ is constant.

A rock dropped down a well takes 1.8 s to hit the water. How far below the top of the well is the surface of the water?