Speed in a cosine velocity model

Speed in a cosine velocity model

5 marks

TGM Original

A particle has velocity v=2cos t m,s-1 for 0 <= t <= pi seconds. Find when its speed increases or decreases. Angles are in radians.

Solution:

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Answer:Speed decreases on \(\left(0,\dfrac{\pi}{2}\right)\) and increases on \(\left(\dfrac{\pi}{2},\pi\right)\).

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