Which statement is an example of velocity
A. A student walk 20 miles down the street.
B.A Ball rolls 50 cenimeters away from the table
C. A car travels 55 kilometers per hour
D.A skateboard moves 2 meters per second
C. A car travels 55 kilometers per hour
The statement that is an example of velocity is option C: "A car travels 55 kilometers per hour."
The statement that is an example of velocity is option C: "A car travels 55 kilometers per hour."
To identify velocity, we need to look for the combination of two things: a distance or displacement and a time. Velocity is a vector quantity that describes the rate at which an object changes position in a specific direction.
In option A, it only mentions a distance (20 miles), but there is no time mentioned, so we cannot calculate the velocity.
In option B, it mentions a distance (50 centimeters) but does not provide any time information. Therefore, we cannot determine the velocity.
In option C, it mentions both a distance (55 kilometers) and a time (per hour). It provides all the necessary information to calculate velocity. Thus, option C is an example of velocity.
In option D, it also mentions a distance (2 meters) and a time (per second), so it provides the necessary information to calculate velocity. However, option C specifically mentions a car traveling, which gives a clearer example of velocity compared to a skateboard. Thus, option C is a better answer in this case.