Question

identify the incorrect statement from the following.

a. In rectilinear motion, body moves in a straight line.

b. Periodic motion is always oscillatory.

c. The motion of a stone dropped from a roof is rectilinear.

d. The motion of a simple pendulum is periodic.

Answer 1

Answer:

A. The first statement is correct because in rectilinear motion, body moves in a straight line.

B. The second statement is incorrect because periodic motion is oscillatory, rectilinear and rotatory motion.

C. The third statement is correct because when a stone is dropped from the roof it falls in a straight line so the motion related to this situation is rectilinear motion.

D. The forth statement is correct because in a simple pendulum oscillatory/to and from motion happens so the forth statements answer is periodic motion. Thank you.