Question

a ball is dropped from a cliff .find [a] its speed 2 s after it is dropped, [b] its speed when it has fallen through 78.4 m and [c] the time taken in falling through 78.4 m.
ans. [a]19.6 m/s [b] 39.2 m/s [c] 4s
say the method [process] pls

Answer 1

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Answer 2

here answer about this question in photo