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 mile
s 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.
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
what happens at Point C is sublimation. the increase in temperature affects the Vapour pressure soon as you can see the curve is increasing with increasing pressure there is increase in temperature that is the sublimation Curve
