AVERAGE VELOCITY

Assertion : The instantaneous velocity is given by the limiting value of the average velocity as the time interval approaches zero. Reason : The direction of the average velocity is same as that of displacement.

Assertion : On a curved path, average speed of a particle can never be equal to average velocity. Reason : Average speed is total distance travelled divided by total time. Whereas average velocity is, final velocity plus initial velocity divided by two.

In reaching her destination, a backpacker walks an average velocity of 1.34 m/s, due west. This average velocity results because she hikes for 6.44 km with an average velocity of 2.68 m/s, due west, turns around, and hikes with an average velocity of 0.447 m/s, due east. How far east did she walk ?

In case of molecules of an ideal gas, which of the following , average velocities cannot be zero?