Question

Which of the following best describes the velocity of an object?

A B0 m/s
B 30 m east
C 30 m/s east
D 30 m/s2

Answer 1

The answer is c
30 m/s east

Answer 2

`\boxed {\boxed {\sf C. \ 30 \ m/s \ east}}`

Step-by-step explanation:

Velocity is the vector measurement of the change in position over time. A vector measurement means the answer must include a magnitude (numerical value) and a direction.

Here are some units of velocity:

• m/s (meters per second)
• kph (kilometers per hour)
• km/s (kilometers per second)

There are many other units, but m/s is the most common.

We can eliminate choice B and D, because the units (meters-m and meters per second squared-m/s²) are not for velocity.

We are left with choice A (30 m/s) and C (30 m/s east). Remember, velocity needs a number and a direction. C contains the direction east, so it must be the correct answer.