Exam 2: Waves and Sound

A speedometer registers ______________.

A projectile's vertical velocity component

What two quantities are constant in uniform circular motion? ______________ and ______________

A ball is thrown up in the air with an initial velocity of 78.4 m/s upward. How long does it take the ball a. to go up? b. to come down after reaching maximum height?

On the Moon, what is the approximate value for the acceleration due to gravity?

Which one of the following is true for deceleration?

A continuous change in position is called ______________.

A stone is dropped from the top of a well that has water in it at a depth of 65.0 m. How long does it take the stone to reach the water?

Which of the following statements is not true?

Average speed multiplied by time gives

The centripetal acceleration of an automobile in uniform circular motion on a flat circular track is supplied by ______________.

An object that is moving in a linear path with an acceleration in the direction opposite to the motion has a(n) ______________ velocity.

If an object moves with constant velocity,

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

At the maximum height of a projectile launched at an angle to the horizontal, the projectile's velocity is in a ______________ direction.

An ant on a picnic table travels 30 cm eastward, then 15 cm northward, then 20 cm westward, and finally 15 cm southward. What is the magnitude of its net displacement?