The law of conservation of momentum<span> states that for two objects colliding in an isolated system, the total </span>momentum<span> before and after the collision is equal. Momentum should be conserved. Hope this answers the question. Have a nice day.</span>

**Answer:**

atm

**Explanation:**

The pressure at the bottom of any liquid column is equal to product of density of the liquid , gravitational acceleration constant (g) and height of the water column

Thus,

Substituting the given values, we get -

kg/m3 m/s^2 meters

atm

Money is important because you have to use it to pay bills buy food and ect.

my money is a 10

**Answer:**

**F₁ = F₂ **

**Explanation:**

Given that

floor pushing up on you by force F₁

gravity pulling down by force F₂

From second law of Newton's

F₁ - F₂ = m a

But here given that ,elevator is moving with constant speed .It means that acceleration of the elevator is zero.

a= 0 m/s²

F₁ - F₂ = m x 0

**F₁ = F₂ **

**Answer:**

<em>The rock reaches a maximum height of 442.225 m and was thrown at a speed of 93.1 m/s</em>

**Explanation:**

<u>Vertical Launch</u>

The rock is launched up with a certain speed **vo**, it reaches its highest point at a height **h** when the speed is zero, and then it stars a free-fall motion until it hits the ground at time **t**.

The maximum height is given by

The rock takes the same time to reach this point as to return to the ground, thus we can calculate the maximum height

The rock was thrown up at a speed