After 3 s of free fall, the object drops 44.13 m and reaches 29.42 m/s.
Distance grows with the square of time (d = v0t + ½gt²), so far more ground is covered in the later seconds than the first.
Final velocity grows linearly with time (v = v0 + gt): each second adds another g of speed.
That impact speed is about 106 km/h (66 mph), ignoring air resistance.
Next stepReal objects reach a terminal velocity once air drag balances gravity, so these formulas hold only while drag is negligible (short drops, dense objects).