Question

Which statements about velocity are true?

Check all that apply.

A. The SI units of velocity are m/s.
B. For velocity, you must have a number, a unit, and a direction.
C. To calculate velocity, divide the change in the distance by time.
D. The symbol for velocity is .

Answer 1

A. The SI units of velocity are m/s.

B. For velocity, you must have a number, a unit, and a direction.

C. To calculate velocity, divide the change in the distance by time.

Step-by-step explanation:

A - SI units for velocity are meters per second. SI (International System) of units is the metric equivalent for units, and m/s are the standard units chosen for velocity under the SI standards.

B - Velocity is a vector, meaning it has magnitude and direction. Because velocity is essentially a speed with direction, it must have units for how fast an object is moving.

C - One method of calculating velocity is distance over time: v = Δ(d/t)

D. Not sure because I'm not seeing a variable here, but the variable for velocity is generally displayed by the letter v

Answer 2

A. The SI units of velocity are m/s.

B. For velocity, you must have a number, a unit, and a direction.

Explanation

Velocity is the rate of change of displacement. Velocity unlike speed it is a vector quantity. This means that it has both direction and magnitude. The SI unit of displacement is metres while that of time is seconds. So, the SI units of velocity will be Metres per second. From the choices in the question the statements that are true about velocity are ;

A. The SI units of velocity are m/s.

B. For velocity, you must have a number, a unit, and a direction.