if by 'you', you mean 'u' then u is the initial velocity v is the final velocity. you need to know the initial velocity in trajectory question (motion of an object through the air) to find height, acceleration, time etc.
Acceleration is the rate of change in velocity.
The equation for calculating velocity when acceleration and time are known is v = u + at, where v is the final velocity, u is the initial velocity, a is the acceleration, and t is the time.
Acceleration tells how velocity changes. If the acceleration is positive, the velocity is increasing; if it is negative, the velocity is decreasing. The equation that relates them is v = u + at, where v is the final velocity, u is the initial velocity, a is the acceleration, and t is the time.
Where a = (v-u)/t a is acceleration, v is final velocity u is initial velocity t is time so, u=v-at
Rate of change of velocity is called acceleration. The mathematical link is: acceleration a=dv/dt where v is the velocity. It's a derivative of v with respect to time t.
Time equals velocity divided by acceleration. t=v/a
a=dv/dt a=acceleration v=velocity t=time.
a=dv/dt a=acceleration v=velocity t=time.
a=dv/dt a=acceleration v=velocity t=time.
If the acceleration is constant.... The formula for velocity is v = v₀ + at For distance it is d = d₀ + v₀t + ½at² For velocity without time it is. v² = v₀² + 2ad For more details refer to the related link in the Related Links section below. The subject is called kinematics
a=dv/dt a=acceleration v=velocity t=time.
Acceleration is the the fluctuation in velocity per unit time.to calculate the acceleration we need the formula : Acceleration = Velocity fluctuations / time taken or Acceleration = Final velocity - Initial velocity / time taken or a = v-u/t