Use conversion factors to solve:
Distance traveled in feet after 12 seconds at eighty-seven mph
and please show me how u solved it.
time = 12 s
Since, 1 mile = 1.609 km
1km = 1000 m
1 h = 60 min = 60.60 s = 3600 s
1 feet = 30.48 cm = 0.3048 m
$\displaystyle Speed = 85 m/h = (85)(1.609) km/h= \frac{85\times 1.609 \times 1000\;m}{3600\;s}=37.99 \;m/s $
$\displaystyle Distance = speed . time = (37.99)(12)=455.88\;m= \frac{455.88}{0.3048}\;feet=1495.67\;feet $