Which of the following is an example of acceleration? select one: a. a boy walks two miles in one hour. b. a girl walks two miles per hour north for three hours. c. a boy walks two meters north, turns west, and walks another two meters. d. a girl drives a total distance of 240 miles in just under four hours.

The answer is option C .Because as the direction of the boy changes ;velocity changes .

Answer

Correct answer is option C .

Explanation:

Option A cannot be correct option because in this case only distance traveled and time is given we are not sure whether velocity is changing or not.

Option B

In this case girl travel with constant velocity so it cannot be accelerated motion

Option C

Correct option is C. Because as the direction of the boy changes that time velocity changes and rate of change of velocity with respect to time is known as acceleration

Option D

In this case also only distance and time is given we cant say whether it is accelerated motion or not

the results is a decrease in air temperature with an increase of altitude.

explanation: