Which object has a constant velocity?

Question

(1 point)
Responses

Object C
Object C

Object D
Object D

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

Neither object has a constant velocity.
Neither object has a constant velocity.
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Answer 1

To determine which object has a constant velocity, we need more specific information about the movement of Objects C and D. Constant velocity means that an object is moving at a steady speed in a straight line without changing direction.

If you provide additional details about the motion of Objects C and D, I can help you analyze them to see which one, if either, has a constant velocity.

Answer 2

Which situation is an example of negative acceleration?(1 point)
Responses

A car moving at a constant velocity
A car moving at a constant velocity

A diver jumping off a diving board and falling to the swimming pool below
A diver jumping off a diving board and falling to the swimming pool below

A bicycle increasing its velocity as the rider pedals harder
A bicycle increasing its velocity as the rider pedals harder

A jogger slowing down at the end of a race

Answer 3

The situation that is an example of negative acceleration is:

A jogger slowing down at the end of a race.

Negative acceleration, also known as deceleration, occurs when an object's speed decreases over time. In this case, the jogger is slowing down, which indicates a decrease in velocity, hence negative acceleration.

Answer 4

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

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.
A marble rolls 30 centimeters away from the table.

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

A car travels east at 45 kilometers per hour.

Answer 5

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 specific direction. In this case, the speed is 45 kilometers per hour, and the direction is east, which together describe the car's velocity.

Answer 6

Use the picture to answer the question.

An illustration shows a car moving in a roundabout with a speed of 10 meters per second.

Which characteristic is constant for the car as it travels around the roundabout?

(1 point)
Responses

direction
direction

velocity
velocity

position
position

speed

Answer 7

The characteristic that is constant for the car as it travels around the roundabout is:

speed.

In a roundabout, the speed of the car (10 meters per second) remains constant while the direction changes continuously. Since velocity is defined as speed with a specific direction, the velocity does change as the car moves around the curve. Therefore, the only constant characteristic in this scenario is the speed.

Answer 8

On a position–time graph, which of the following does the value of the slope indicate about the object?(1 point)
Responses

velocity
velocity

change in position
change in position

total distance
total distance

change in direction

Answer 9

On a position–time graph, the value of the slope indicates:

velocity.

The slope of a position-time graph represents the rate of change of position with respect to time, which is the definition of velocity. A steeper slope indicates a faster velocity, while a shallower slope indicates a slower velocity.

Answer 10

Use the position-time graphs for object C and object D to answer the question.

The vertical axis is labeled position (m) with values 25 and 32 near the top. The horizontal axis is labeled time (s) and ranges from 0 to 6 in increments of 1. The graph for object C is a concave up graph that slopes upward to the point (6, 32). The graph for object D is a dashed line that slopes upward from the origin to point (6, 25), intersecting the curve for object C.

Does either object have a constant velocity?

(1 point)
Responses

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

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

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

Only object C has a constant velocity.

Answer 11

To determine if either object has a constant velocity based on the described position-time graphs:

• Object C's graph is described as a concave up curve that slopes upward to the point (6, 32). This indicates that the velocity is changing (accelerating) because a concave up shape suggests that the rate of position change is increasing.

• Object D's graph is described as a dashed line that slopes upward from the origin to point (6, 25), indicating a consistent linear increase in position over time. This straight line means that object D has a constant velocity.

Based on this analysis, the correct response is:

Only object D has a constant velocity.