To find the time it takes for an object to accelerate from an initial velocity to a final velocity when acceleration is constant, you can use the following equation of motion:
v = u + at
where: v = final velocity u = initial velocity a = acceleration t = time
Rearranging the equation, you can solve for time (t):
t = (v - u) / a
Simply substitute the known values of the final velocity (v), initial velocity (u), and acceleration (a) into the equation to calculate the time (t).