Question

A parachutist's speed during a free fall reaches 70 meters per second. What is this speed in feet per second? At this speed, how many feet will the parachutist fall during 20 seconds of free fall? In your computations, assume that 1meter is equal to 3.3 feet

Answer 1

Speed is 231 ft/s.

Distance is 4620 ft.

Solution:

First we have to convert the unit of speed from m/s to ft/ s.

Then for 20 seconds, we have to calculate the feet covered by the parachute.

$1 meter =3.3 feet\\\\ \frac{70 \frac{m}{s} \times 3.3 f t}{1 m}=231 \frac{f t}{s}$

In 20 seconds, the parachute covers the distance of,

$231 \frac{f t}{s} \times 20 s=4620 \mathrm {ft}$