What is not a measurement for deceleration

First, deceleration is the rate at which the speeds decreases, and it can be calculated as:

d = -(vf - v0)/t

where vf is the final velocity, v0 is the initial velocity, and t is the lapse of time.

Is easy to see that the units are distance/(time squared)

So any measure that has different units is not a measure of deceleration.

For example, the measure of the speed in a given direction is not a measure of deceleration.

The measure of how fast something rotates is not a mesure of deceleration (this has the same units, but this would be related to the centripetal acceleration)

The measure of the weight of someting is not a measure of deceleration.

c because the action was the roller coaster reaches bottom of hill (action) reaction would be blood tends to drain away from head

hope this !

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