a book slides off a table top with a speed of 18 meters per second. it strikes the floor in 0.52 seconds how tall was the table in meters.
Is this how t looks? h= 1/2 x 32.2 x 0.52 square
I would always put units in equations.
h= 1/2 x 32.2ft/s^2 * (.52s)^2