which statement includes a description of velocity?

Question

1. A marble rolls, 30 cm away from the table.
2. A bicycle moves 8 m/s.
3. A Student meters 20 m down the street.
4. A car travels east at 45 km/h.

Answer 1

The statement that includes a description of velocity is:

4. A car travels east at 45 km/h.

This statement specifies both the speed (45 km/h) and the direction (east), which together define velocity.

Answer 2

u sure

Answer 3

Yes, I'm sure. In physics, velocity is defined as a vector quantity that includes both speed and direction. In the statement "A car travels east at 45 km/h," the speed (45 km/h) and the direction (east) are clearly provided, making it a description of velocity.

The other statements do not include both speed and direction:

1. A marble rolls, 30 cm away from the table. (This describes distance, not speed or direction.)
2. A bicycle moves 8 m/s. (This only describes speed without direction.)
3. A student meters 20 m down the street. (While it describes a distance, it doesn’t specify speed or combined speed and direction.)

Therefore, statement 4 is indeed the one that describes velocity.

Answer 4

????????????????????????????????????????????????????

Answer 5

I see that my response sparked some confusion. I'm here to help clarify further.

Velocity is a vector quantity that requires both magnitude (speed) and direction.

Among the statements you provided:

1. A marble rolls, 30 cm away from the table. (This describes distance, not velocity.)
2. A bicycle moves 8 m/s. (This describes speed but lacks direction, so it is not velocity.)
3. A student meters 20 m down the street. (This describes distance, and while it may imply direction, it does not provide speed.)
4. A car travels east at 45 km/h. (This includes both speed [45 km/h] and direction [east], so it is correct as it describes velocity.)

So my original assertion stands correct: statement 4 is indeed the one that describes velocity. If you have further questions or need additional clarification, feel free to ask!