-4.9t^2+1=0

Solution for -4.9t^2+1=0 equation:

Simplifying
-4.9t2 + 1 = 0

Reorder the terms:
1 + -4.9t2 = 0

Solving
1 + -4.9t2 = 0

Solving for variable 't'.

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

Add '-1' to each side of the equation.
1 + -1 + -4.9t2 = 0 + -1

Combine like terms: 1 + -1 = 0
0 + -4.9t2 = 0 + -1
-4.9t2 = 0 + -1

Combine like terms: 0 + -1 = -1
-4.9t2 = -1

Divide each side by '-4.9'.
t2 = 0.2040816327

Simplifying
t2 = 0.2040816327

Take the square root of each side:
t = {-0.451753952, 0.451753952}