Question

Four pairs of initial and final positions of a body along an x axis are given. Which pair gives a positive displacement of the body? (a) -10 m, +15 m (b) -5 m, -12 m (C) 2 m, -5 m (and) 2m, 1m​

Answer 1

Pair which gives a positive displacement of the body is (a) -10 m, +15 m

(a) -10 m, +15 m

• In this given pair, body is moving from negative x axis to positive x axis i.e right direction

• Displacement = Final position - intial position

= 15 - (-10)

= 25

• So when a body move in right direction for given axis x its displacement is positive.

• Check other option by yourself.

Answer 2

Answer:Answer:

a) -10 m, +15 m

Explanation:

Δx = x2 -x1

      = 15 - -10

      = 25