It will take 130-140 feet for a tractor-trailer or a truck to stop when going at the same speed.
The stopping distance of a body moving with constant acceleration can be calculated by using the following equation,
v^2 - u^2 = 2as
As the body has stopped, v will be zero.
v^2 - u^2 = 2as
The stopping distance comes out to be
s = u^2/2a
As the stopping distance is proportional to the square of the initial velocity of the body, the mass of the body does not have any effect on the stopping distance.
So, both a car and a tractor-trailer will have the same stopping distance when moving at the same speed.
Therefore, it will take 130-140 feet for a tractor-trailer or a truck to stop when going at the same speed.
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