1000=-16t^2+1800

Solution for 1000=-16t^2+1800 equation:

Simplifying
1000 = -16t2 + 1800

Reorder the terms:
1000 = 1800 + -16t2

Solving
1000 = 1800 + -16t2

Solving for variable 't'.

Move all terms containing t to the left, all other terms to the right.

Add '16t2' to each side of the equation.
1000 + 16t2 = 1800 + -16t2 + 16t2

Combine like terms: -16t2 + 16t2 = 0
1000 + 16t2 = 1800 + 0
1000 + 16t2 = 1800

Add '-1000' to each side of the equation.
1000 + -1000 + 16t2 = 1800 + -1000

Combine like terms: 1000 + -1000 = 0
0 + 16t2 = 1800 + -1000
16t2 = 1800 + -1000

Combine like terms: 1800 + -1000 = 800
16t2 = 800

Divide each side by '16'.
t2 = 50

Simplifying
t2 = 50

Take the square root of each side:
t = {-7.071067812, 7.071067812}