Question

(iv) In rectilinear motion the force acting on the object and the velocity of the object are in ______
direction.
(a) Random (b) Perpendicular
(c) Same
(d) All of these

(v) Which of the following is the correct expression for the coefficient of restitution?
(a) Relative speed of separation + Relative speed of approach
(b) Relative speed of separation - Relative speed of approach
c) Relative speed of separation x Relative speed of approach
(d) Relative speed of separation = Relative speed of approach​

Answer 1

Answer:

the first one is c because rectilinear motion means motion in one direction