Question

Guys help me ...give the answer...​

Answer 1

Explanation:

it was realised at the velocity of 1000 squareeter per second

Answer 2

Answer:

Given,

H = 1000 m,

v = 0, g = 9.8 m/s²

i From the third equation of motion,

v²= u² + 2 gH

⇒ 0 = u² - 2 x 9.8 x 1000

⇒u = √2 X 9.8 1000

= √19600 = 140 m/s

ii From the first equation of motion,

v = u + gt

⇒0 = 140- 9.8t

⇒ t = 140/9.8 = 14.28 s