Question

A body thrown vertically down from
a height moves 40m. during the
4th Second of its motiin
Determine its intial speed​

Answer 1

Value of Small g which is acceleration due to gravity = 9.8m/s²

x=4. SX= 40 m

SX = u + a/2 (2x-1)

40 = u + 9.8/2(2×4-1)

u + 4.9(7) = 40

u = 40 - 34.3

= 5.7 m/s²

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