A particle can move only along x-axis. Three pairs of initial and final positions of particle at two successive times are given
Pair Initial positions Final position
1 (-3)m (+5)m
2 (-3) m (-7)m
3 (+7) (-3),
Find the sum of magnitudes of displacement in the pairs
which give negative displacement in m.

Answer

14

Explanation

`s_1 = 5(-3) = 8m`
`s_2 = -7-(-3) = -4m`
`s_3 = -3-7 = -10m`
Required value = `(s_2+s_3) = (-14) = 14`.