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If you know average speed then you cannot determine the acceleration: the very nature of being a average hides all the increases and decreases in speed which are the accelerations (technically, acceleration is change of speed in a direction).
All average speed tells you is the constant speed at which you require to travel to cover the given distance in the given time; as the speed is constant, the acceleration is zero.
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LaoIf you know only average speed and time, you don't have enough information.You need to work with VELOCITIES - not with speeds.
And you need to know the DIFFERENCE between the final velocity and the initial velocity. Knowing the average velocity doesn't help (for a given average velocity, the acceleration could be anything).
The calculation is to divide the difference in velocity (i.e., final velocity minus initial velocity) by the time elapsed. That will give you the AVERAGE ACCELERATION.
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What is the maximum acceleration of a train travelling at 90 miles per hour?
The speed or velocity of a train has no bearing on its acceleration.
What is the maximum acceleration of a train with a maximum speed of 90 miles per hour?
You have to know how long it takes to get to 90 mph to solve this. Speed = acceleration x time
How do you calculate speed without distance?
If you know the initial speed (u), acceleration (a) and time (t), then the final speed, v = u + at.
If the plotted points on a speed time graph do not form a straight line what do you know about the objects acceleration?
You can conclude that the acceleration of the object is not constant.
A car accelerate uniformly from 6.6 m s in 6.5 seconds whats the distance the car travels during that time?
Not enough information. You also need to know how much the acceleration is. Once you know that, calculate the final speed, then calculate the average speed as (initial speed + final speed) / 2, and multiply that by the time to get the distance.
