To calculate downward velocity, you need to know the initial velocity and acceleration due to gravity. The formula for downward velocity is v = u + at, where v is the final velocity, u is the initial velocity, a is the acceleration, and t is the time.
In physics, airtime refers to the amount of time an object spends in the air while in motion. It is typically measured from the moment the object leaves the ground until it touches the ground again.
Airtime does not directly affect velocity. However, the longer an object spends in the air, the farther it can travel, which may result in a change in velocity. Additionally, factors such as air resistance and wind can also affect the velocity of an object during its airtime.
To find airtime using downward velocity, you can use the formula t = (v-u)/a, where t is the time, v is the final velocity, u is the initial velocity, and a is the acceleration. This formula assumes that the object starts and ends at ground level.
No, airtime cannot be negative. It is a measure of time, which is always positive. However, the velocity during airtime can be negative if the object is moving in the opposite direction of its initial velocity.