Math, asked by joydsouza2006, 2 months ago

An object thrown vertically upwards reaches a height of 80 m. What was its initial velocity?
How long will the object take to come back to the earth? Assume g= 10 m/s²​

Answers

Answered by ansarisajidahmed8
1

Step-by-step explanation:

s

s =  \frac{1}{2}  \times g  \times t {}^{2}  \\  \\80 =  \frac{1}{2}  \times 10 \times t {}^{2}  \\ 80 \ = 5 \times t {}^{2}  \\  \frac{80}{5}  = t {}^{2}  \\ t { }^{2}  = 16 \\ t =  \sqrt{16 }  \\ t = 4. \\ \\ v = g \times t \\ v = 10 \times 4 = 40.

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