The body begins to fall from rest and before hitting the ground has a speed of 40 m / s. What is the drop time? neglect air resistance

Initial data: the body began to fall from a state of rest (V0 = 0 m / s); V (body speed before hitting the ground) = 40 m / s; air resistance is not considered.
Reference values: g (acceleration due to gravity) ≈ 10 m / s2.
The falling time of the body can be expressed from the formula: V = a * t = g * t, whence t = V / g.
Calculation: t = 40/10 = 4 s.
Answer: The time for the body to fall is 4 seconds.