Question

A stone is thrown vertically upward direction with a velocity of 49 m/s it returns to the ground in

Answer 1

very simple. !!!

u = 49 m / s


now for the time => given by formula => 2U g


so time will be => 2× 49 / 9.8

=> 10 sec



time of accent = time of decent = 5 sec


hence total time taken is = 10 sec


hope it help you !!!

Answer 2

Answer:

Hi friend

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Your answer

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here,

Final velocity = V = 0 m/s ,

Initial velocity = u = 49 m/s ,

Acceleration due to gravity = a = g = - 9.8 m/s² ,

Height = s = ?

So,

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v² - u² = 2as

=> v² - u² = 2×g×s

=> (0)² - (49)² = 2 × (- 9.8) × s

=> - (49 × 49) = - ( 2 × 9.8 × s)

=> s = (49 × 49) / (2 × 9.8)

=> s = 122.5 m

HOPE IT HELPS