Question

a particle dropped from a height h. it takes 9ec to reach the grumd levelthe value of h will be -----g=10m/s2 *​

Answer 1

Answer:

here is Ur answer

hope it helps you

Answer 2

Answer:

h = 405m

Explanation:

The first step to this problem is deciding the convention: I am taking downwards direction to be positive.

Given : g = 10m/s2

time (t) = 9 seconds

and since the object is dropped its initial velocity(u) is 0m/s

we need to find h:

using the formula:

$s = ut + \frac{1}{2} a{t}^{2}$

h = 0. t + 1/2*g*9*9

h = 1/2 * 10*81

= 5*81 = 405m