Question

Convert 420 feet / sec into Mph
Answer should be 286.3636
Use these conversions below to help in your conversion
1 foot = 12 inches
3 Foot = 1 yards
5,280 Ft = I mile
1 inch = 2.54 cm
1 Km = 0. 62 miles
1000mm = 1 m
100 cm = 1 m
10 mm = 1 cm
1 Km = 1000 m
60 Sec = 1 min
60 min= 1 hr
24 hr = 1 day
365 days = 1 year
1 days = 1 week
52 weeks = 1 year

Answer 1

To convert 420 feet per second to miles per hour (mph), we can follow these steps:

1. **Convert feet per second to miles per second**:
- We know that 1 mile = 5,280 feet.
\[
\text{miles per second} = \frac{420 \text{ feet}}{5,280 \text{ feet}} = \frac{420}{5280} \text{ miles} \approx 0.0795454545 \text{ miles}
\]

2. **Convert seconds to hours**:
- We know that 1 hour = 60 seconds × 60 minutes = 3600 seconds.
\[
\text{miles per hour} = \text{miles per second} \times 3600 \text{ seconds/hour} = 0.0795454545 \text{ miles} \times 3600 \text{ seconds/hour}
\]
- Performing the multiplication:
\[
0.0795454545 \times 3600 \approx 286.36363636 \text{ mph}
\]

Thus, converting 420 feet per second to miles per hour gives approximately:

\[
\boxed{286.3636 \text{ mph}}
\]