A skateborder descends on a ramp from 172 feet to 67 feet in 15 seconds. What is the average change in height per sceond?
(172 - 67)/15 = _____ feet per second
67
To find the average change in height per second, you need to calculate the difference in height between the starting point and the ending point, and then divide it by the time it takes to travel that distance.
The starting height is 172 feet, and the ending height is 67 feet. The difference in height is 172 - 67 = 105 feet.
The time taken is 15 seconds.
Now, divide the difference in height by the time taken:
Average change in height per second = Difference in height / Time taken
= 105 feet / 15 seconds
= 7 feet per second
So, the average change in height per second for the skateboarder descending the ramp is 7 feet.