An object goes from a speed of 9 m/s to a total stop in 3 s. what is the object's acceleration

The object's acceleration is 3 m/s².

Explanation:

Given that,

Speed = 9 m/s

Time = 3 sec

We need to calculate the acceleration

Using equation of motion

Where, v = final speed

u = initial speed

t = time

a = acceleration

Put the value into the formula

Negative sign shows the deceleration.

Hence, The object's acceleration is 3 m/s².

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