Speed and Velocity

Front

Identify the following quantities as scalar or vector: the mass of an object, the number of hairs on a dog, an airplane's velocity.

Back

Scalar, Scalar, Vector

Front

The students are arguing over the differences between speed and velocity. One student says, “Speed is a vector because it describes how fast an object traveling. Velocity is a scalar because it tells how fast and what direction an object is traveling.” Which of the following statements is correct? Options: The students' understanding of all four terms (speed, velocity, scalar, and vector) is correct. The students' understanding of all four terms (speed, velocity, scalar, and vector) is incorrect. The students' understanding of speed and velocity is incorrect but their understanding of scalar and vector is correct. The students’ understanding of speed and velocity is correct but their understanding of scalar and vector is incorrect.

Back

The students’ understanding of speed and velocity is correct but their understanding of scalar and vector is incorrect.

Front

17 m/s, East

Back

Vector

Front

10 mph

Back

scalar

Front

How fast a car travels when it reaches top speed: scalar or vector?

Back

scalar

Front

Describing how fast and in which direction a deer is running: scalar or vector?

Back

vector

Front

This is speed in a specific direction.

Back

Velocity

Front

What two measurements are necessary for calculating speed?

Back

Distance and time

Front

What is the speed of an object that travels 60 meters in 4 seconds?

Back

15 m/s

Front

An old lady rolls down a hill at 3 m/s. The hill is 36 m long. How many seconds does it take the old lady to reach the bottom of the hill?

Back

12 s