The formula for calculating initial velocity is v = √(2gh), where v is the initial velocity, g is the acceleration due to gravity, and h is the height of the object.
To determine the initial velocity of a bullet, you need to know the mass of the bullet, the mass of the object it is impacting, and the distance traveled by the bullet before impact. You can then use the formula v = √(2mgh)/m, where v is the initial velocity, m is the mass of the bullet, g is the acceleration due to gravity, and h is the height of the object.
Yes, initial velocity can be negative. This indicates that the object is moving in the opposite direction of the chosen positive direction.
The units for initial velocity are meters per second (m/s).
The mass of the bullet and impacting object do not directly affect the initial velocity. However, a heavier bullet or impacting object may result in a greater force of impact, which can affect the final velocity of the objects after impact.