- #1

Sleve123

- 20

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A particle travels on a semi-circular path from A to B -

The diameter being 200m, the time taken 80 seconds, Calculate:

a) its speed

b) average velocity from A to B

c) the change velocity from A to B

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Me and my lecturer agree that a) is 3.93 m/s, b) is 2.5 m/s (in the direction A to B), but we disagree on c).

My lecturer got 5 m/s and me 7.85 m/s, are we both wrong or are one of us right?

Also it would be helpful to expalin how you get to the answer (if I'm wrong).