Final answer:
The speed in feet per second is 171.66639 and the parachutist will fall down 858.33195 feet in five seconds of freefall.
Step-by-step explanation:
To calculate the speed in feet per second, we first need to convert the speed from mph to feet per second. We can do this by using the conversion factor: 1 mph = 1.46667 feet per second.
So, the speed in feet per second would be: 117 mph × 1.46667 feet per second = 171.66639 feet per second.
To calculate the distance the parachutist will fall down in five seconds of freefall, we can use the formula: distance = (speed × time).
Plugging in the values, the distance would be: 171.66639 feet per second × 5 seconds = 858.33195 feet.