Question

A parachutists rate during a free fall reaches 126 miles per hour. What is the rate in feet per second. At this rate, how many feet will the parachutist fall during 5 seconds of free fall? In your computations, use the fact that 1 mike is equal to 5280 feet. Do not round your answers.

Answer 1

Answer: 924 feet

Explanation:

First, let's convert the unit of miles/hour to feet/second. Let's start with miles.

1 mile = 5280 feet

126 miles * 5280 feet = 665,280 feet

1 hour = 3660 seconds

126 mi/hr = 665280 ft/3600 sec = 184.4 ft/sec

The parachutist fell for 5 seconds, so multiply 184.4 ft/sec by 5.

184.4 * 5 = 924

The parachutist fell 924 feet in 5 seconds at a rate of 184.4 ft/sec.