An object moves from A to D as shown in the figure. Find (a) the displacement of the objea and (b) the distance travelled. AB 20 km BD 5 km .
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Distance = Length of path travelled
=AB+BC
=15+9
=24km
Displacement = Shortest path from initial to final position
=AC
=
(AB)
2
+(BC)
2
{Pythagoras Theorem}
=
225+81
=17.5km
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