Question

Which statement includes a description of velocity?(1 point)
Responses

A car travels east at 45 kilometers per hour.
A car travels east at 45 kilometers per hour.

A bicycle moves 8 meters per second.
A bicycle moves 8 meters per second.

A student walks 20 meters down the street.
A student walks 20 meters down the street.

A marble rolls 30 centimeters away from the table.

Answer 1

Does either object have a constant velocity?

(1 point)
Responses

Both objects have a constant velocity.
Both objects have a constant velocity.

Only object D has a constant velocity.
Only object D has a constant velocity.

Neither object has a constant velocity.
Neither object has a constant velocity.

Only object C has a constant velocity.
Only object C has a constant velocity.

Answer 2

The statement that includes a description of velocity is:

**A car travels east at 45 kilometers per hour.**

Velocity is defined as the speed of an object in a given direction, which this statement provides.

Answer 3

To determine if either object has a constant velocity, we analyze the definitions:

- **Constant velocity** means both the speed and the direction of movement remain unchanged.

1. **A car travels east at 45 kilometers per hour.** (constant speed and direction)
2. **A bicycle moves 8 meters per second.** (speed is constant, but direction is unspecified)
3. **A student walks 20 meters down the street.** (distance traveled is specified, but direction is not clear)
4. **A marble rolls 30 centimeters away from the table.** (this measures distance from a point but doesn't specify a direction or speed over time)

Based on this analysis:

- The car has a defined constant velocity since both speed and direction are given.
- The other objects lack sufficient information to specify a constant velocity.

Therefore, the correct response is:

**Only object A has a constant velocity.**

If "object A" was not listed, please refer to the correct object from your context. The overlapping responses indicate the necessity of context to respond accurately. If A was indeed referred to as traveling east with a constant speed, then that response holds valid.