C) Find the kinetic of a ball of mass 200 grams moving at a speed of 20 m/s. [Ans; 20 )]
Solution,
Mass (m): 200 g
velocity (v) = 20 m/s
kinetic Energy (k. E)= ?
We know,
According to the formula,

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The difference between a red shift and a blue shift has to do with wavelength frequency. t or f