Speed and Velocity

Front

The rate at which an object changes its location.

Back

speed

Front

Like distance, speed is a _____________ because it has a magnitude but not a direction.

Back

scalar

Front

Its speed at a specific instant in time, however, is its _______________. A car's speedometer describes its ________________.

Back

instantaneous speed

Front

Brayden throws a baseball from the pitcher’s mound to home plate in 0.46 s. The distance is 18.4 m. What was the average speed of the baseball?

Back

40 m/s

Front

Kayla walked to her friend’s house with an average speed of 1.40 m/s. The distance between the houses is 205 m. How long did the trip take her?

Back

146 s

Front

The vector version of speed is ____________.

Back

velocity

Front

If you consider infinitesimally small intervals, you can define ______________, which is the velocity at a specific instant in time.

Back

instantaneous velocity

Front

Instantaneous velocity and average velocity are _______ if the velocity is constant.

Back

equal

Front

What describes the speed and direction of an object?

Back

Velocity

Front

A bird flies with an average velocity of 7.5 m/s east for 2.4 s, then 6.8 m/s east for 3.5 s. What is the bird’s total displacement from its starting point?

Back

42 m east