Question

Assertion : The average and instantaneous velocities have same value in a uniform motion.
Reason : In uniform motion, the velocity of an object increases uniformly
A. If both assertion and reason are trure and reason is the correct explanation of assertion.
B. If both assertion and reason are true but reason is not the correct explanations of assertion.
C. If assertion is true but reason is false.
D. If both assertion and reason is false

Answer 1

Correct Answer - (c )
An object is said to be in uniform motion if it undergoes equal displacement in equal intervals of time.
`therefore v_(av) =( s_1 + s_2 + s_3 +...)/(t_1 + t_2 + t_3 + ....)= (s + s + s +...)/(t + t + t +.....) = (ns)/(nt)` and `v_"ins" = s/t`
Thus, in uniform motion average and instantaneous velocities have same value.