Answer :
Final answer:
The acceleration of the truck is -5.55m/s², which is actually a deceleration because the truck is slowing down.
Explanation:
To solve this question, we have to find the acceleration. We first need to know the initial velocity (u), final velocity (v) and time taken (t). In this case, the initial velocity u is 97.5 m/s, the final velocity v is 0 m/s (since the truck comes to a stop), and the time taken t is 17.56 seconds.
The formula to find acceleration (a) is:
a = (v - u) / t.
Plugging the values we get,
a = (0 - 97.5) / 17.56.
This gives us a value for the acceleration of -5.55 m/s². When acceleration is negative, it is often referred to as deceleration.
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