Answer:
Part A:
Sheila travels at a speed of 6 meters per second.
Part B:
It would take Sheila 15 seconds to travel 90 meters at this speed.
Explanation:
Part A:
To calculate Sheila's speed, we divide the distance traveled (54 meters) by the time taken (9 seconds):
Speed = Distance / Time = 54 meters / 9 seconds = 6 meters per second.
Therefore, Sheila travels at a speed of 6 meters per second.
Part B:
To find the time it would take for Sheila to travel 90 meters at the same speed, we can use the formula:
Time = Distance / Speed
Plugging in the values, we have:
Time = 90 meters / 6 meters per second = 15 seconds.
Therefore, it would take Sheila 15 seconds to travel 90 meters at this speed.