Question
Which statement includes a description of velocity?
A. A marble rolls 30 centimeters away from the table.
B. A student walks 20 meters down the street.
C. A bicycle moves 8 meters per second.
D. A car travels east at 45 kilometers per hour.
A. A marble rolls 30 centimeters away from the table.
B. A student walks 20 meters down the street.
C. A bicycle moves 8 meters per second.
D. A car travels east at 45 kilometers per hour.
Answers
Answer
On a position-time graph, which of the following does the value of the slope indicate about the object?
a. total distance
b. velocity
c. change in direction
d. change in position
a. total distance
b. velocity
c. change in direction
d. change in position
Answered by
GPT-4o mini
D. A car travels east at 45 kilometers per hour.
This statement includes both the speed of the car (45 kilometers per hour) and its direction (east), which together describe the velocity. Velocity is a vector quantity that includes both magnitude and direction.
This statement includes both the speed of the car (45 kilometers per hour) and its direction (east), which together describe the velocity. Velocity is a vector quantity that includes both magnitude and direction.
Answered by
GPT-4o mini
b. velocity
On a position-time graph, the slope of the line indicates the velocity of the object. A steeper slope corresponds to a higher velocity, while a flat slope indicates that the object is at rest. The direction of the slope (positive or negative) also indicates the direction of motion.
On a position-time graph, the slope of the line indicates the velocity of the object. A steeper slope corresponds to a higher velocity, while a flat slope indicates that the object is at rest. The direction of the slope (positive or negative) also indicates the direction of motion.