As noted above make sure you convert the units appropriately first or use our speed calculator which does that automatically. 2 Achild throws a ball straight up in to the air. Sut12gt² where s is the distance u is the initial velocity t is the time and g is the gravitational force.
The deceleration formulas calculate the rate of decrease in overall speed.
Avf-vitf-ti where a is acceleration vf is the final velocity vi is the initial velocity tf is the final time and ti is the initial time basically delta t. Initial Velocity formulas are used to find the initial velocity of the moving body if some of the terms are given. Finally plug those three values into the formula above to get initial velocity. Where a is the acceleration v0 is the starting velocity v1 is the final velocity and t is the time acceleration duration or t 1 - t 0.