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Thanks, I did it by saying that the max velocity is when the velocity is constant. I showed it with the SUVAT equations, hope it is right.
That doesn't work if the question intends what I think it does, as laid out in post #39.Thanks, I did it by saying that the max velocity is when the velocity is constant. I showed it with the SUVAT equations, hope it is right.
But if it first goes with a constant acceleratio, then has constant velocity and then desaccelerate with constant acceleration, wouln't it be the max speed when the speed is constant?That doesn't work if the question intends what I think it does, as laid out in post #39.
With no acceleration, it can never start to move.
Yes, but the task it minimise the total time of travel. How should you apportion the time to the three stages?But if it first goes with a constant acceleratio, then has constant velocity and then desaccelerate with constant acceleration, wouln't it be the max speed when the speed is constant?