Question:
Following are four different relations about displacement, velocity, and acceleration for the motion of a particle in general. Choose the incorrect one (s):
(a) vav = 1/2 [v(t1) + v(t2)]
(b) vav = r(t2)-r(t1)/t2-t2
(c) r = 1/2 [v(t2)-v(t1)](t2-t1)
(d) aav = v(t2)-v(t1)/t2-t1
Solution:
The correct answer is (a) vav = 1/2 [v(t1) + v(t2)] and (c) r = 1/2 [v(t2)-v(t1)](t2-t1)