PDF Motion In One Dimension - Testlabz.com Motion in One Dimension 1. What do you understand by the terms (i) rest (ii) motion ? Support your answer by giving two examples each. Ans. (i) When a body does not change its position with respect to the surrounding, the body is said to be at rest. Examples : A lamp post, a table in a room. (ii) When a body changes its position with respect to the