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19. Whic ch of the following functions could be a solution to the equation? С. у 3Cosm 9.8,2 20. What is the linear speed of
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1)2(constant)y this is only possible for trignometric functions(sin/cos) or (constant)y (constant is imaginary in the second case) so the answer is option-C , all other options the order gets decreased on differentiating

2) \omega of the earth is 1 revolution in one day 2\pi/86400s ,radius is 6.37x106 so velocity is r\omega = 2\pix6.37x106 /86400s = 463 m/s

2(constant)y

(constant)y

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