56=4.9*t^2

Solution for 56=4.9*t^2 equation:

Simplifying
56 = 4.9t2

Solving
56 = 4.9t2

Solving for variable 't'.

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

Add '-4.9t2' to each side of the equation.
56 + -4.9t2 = 4.9t2 + -4.9t2

Combine like terms: 4.9t2 + -4.9t2 = 0.0
56 + -4.9t2 = 0.0

Add '-56' to each side of the equation.
56 + -56 + -4.9t2 = 0.0 + -56

Combine like terms: 56 + -56 = 0
0 + -4.9t2 = 0.0 + -56
-4.9t2 = 0.0 + -56

Combine like terms: 0.0 + -56 = -56
-4.9t2 = -56

Divide each side by '-4.9'.
t2 = 11.42857143

Simplifying
t2 = 11.42857143

Take the square root of each side:
t = {-3.380617019, 3.380617019}