Answer :
Answer:
The truck was moving 16.5 m/s during the time it took to stop, which was 3 seconds.
- Initial velocity = 33 m/s
- Final velocity = 0 m/s
- Average velocity = (33 + 0) / 2 m/s = 16.5 m/s
Explanation:
- First, how long does it take the truck to come to a complete stop?
- ( 33 m/s ) / ( 11 m / s^2 ) = 3 seconds
- Then we can look at the average velocity between when the truck started decelerating and when it came to a complete stop. Because the deceleration is constant (always 11m/s^2) we can use this trick.