Final answer:
The Salt March Harvest Mouse ran at a speed of 40 centimeters per second, calculated by dividing the distance of 360 centimeters by the time of 9 seconds.
Step-by-step explanation:
To find out how fast the Salt March Harvest Mouse ran, we need to calculate its speed. Speed is calculated by dividing the distance traveled by the time it takes to travel that distance. In this case, the mouse ran a 360 centimeter straight course in 9 seconds.
The speed (v) can be calculated using the formula:
v = distance / time
By plugging the numbers into the formula, we get:
v = 360 cm / 9 s
Which simplifies to:
v = 40 cm/s
Therefore, the correct answer is:
A) 40 centimeters/second