Question

Which pair/pairs of initial and final positions along the x-axis, would fetch a net negative displacement?

• A. -4 m, +5 m
• B. -3 m, +7 m
• C. -7 m, -2 m
• D. +3 m, -5 m

Answer 1

The correct option is D +3 m, -5 m

a) Displacement =
=> Final position – Initial position
=> 5-(-4) = 9 m

b) Displacement =
=> Final position – Initial position
=> 7 -(-3) = 10 m

c) Displacement =
=> Final position – Initial position
=> -2 -(-7) = 5 m

d) Displacement =
=> Final position – Initial position
=> -5 -8 = -8 m

$\therefore$ +3 m, -5 m gives negative displacement or displacement towards the negative x axis of -8 m.