Question

(i) Calculate distance & displacement in the following cases
a. An object moving along the boundary of circular track of diameter 10m & completes 4.5 rounds.
b. A boy started jogging from his home & moves 500m towards West then 400m towards South, then 600m towards East & finally 400m towards North

Answer 1

Hey.

Here is the answer.

a) distance = 4.5 rounds

= 4.5× circumference

= 4.5 × πd

= 4.5×3.14×10

= 141.37 m

Displacement = shortest distance between initial and final position

So, displacement after 4.5 rounds

= diameter

= 10 m

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b) Distance travelled = 500+400+600+400

= 1900 m

Displacement = final position - initial position

= 100m east from start - 0 m from start

= 100 m towards East

Thanks