# If an object with uniform acceleration (or deceleration) has a speed of #12 m/s# at #t=0# and moves a total of 145 m by #t=15#, what was the object's rate of acceleration?

The deceleration is

Apply the equation of motion

Therefore,

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The object's rate of acceleration is 0.8 m/s^2.

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When evaluating a one-sided limit, you need to be careful when a quantity is approaching zero since its sign is different depending on which way it is approaching zero from. Let us look at some examples.

When evaluating a one-sided limit, you need to be careful when a quantity is approaching zero since its sign is different depending on which way it is approaching zero from. Let us look at some examples.

When evaluating a one-sided limit, you need to be careful when a quantity is approaching zero since its sign is different depending on which way it is approaching zero from. Let us look at some examples.

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