Suppose the speedometer in your car reads 55.0 mph also written as
mile/hour. What is your speed in m/sec? (1 km = 0.621 mi.)
unit factor methond soooo lost on this one please help!!!
if 1 km = .621 miles, then
1 mile = 1/.621 or 1.6103 km
55 miles = 55(1.6103)km = 88.5668 km
= 88566.8 m
55 m/hr = 88566.8 m/h
= 88566.8 m/(3600 s) = 24.6 m/s
a train leaves at 2pm heading due south at 60 mph. a second train leaves at 3:15pm heading due north at 80 mph. at
what time will they be 250 miles apart?
To convert speed from miles per hour (mph) to meters per second (m/s), you can use unit conversion factors.
Step 1: Convert miles to kilometers.
Since 1 mile is equal to 0.621 kilometers, you can multiply the speed in miles by 0.621:
55.0 mph * 0.621 km/mi = 34.155 km/h
Step 2: Convert kilometers per hour to meters per second.
Conversion factor: 1 km/h = 0.27778 m/s
Multiply the speed in kilometers per hour by 0.27778:
34.155 km/h * 0.27778 m/s = 9.4871 m/s
Therefore, your speed is approximately 9.4871 m/s.
To convert the speed from miles per hour (mph) to meters per second (m/s), you can use the unit factor method. The unit factor method involves multiplying the given value by a ratio of equivalent units to convert it to the desired units.
Here's how you can solve this problem step-by-step:
Step 1: Determine the conversion factor between miles and kilometers.
Given: 1 km = 0.621 mi
Step 2: Convert the given speed from miles per hour to kilometers per hour.
To do this, multiply the given speed (55.0 mph) by the conversion factor (1/0.621 km/mi):
55.0 mph * 1/0.621 km/mi = 88.51 km/h
Step 3: Convert the speed from kilometers per hour to meters per second (since 1 km/h = 0.2778 m/s).
To do this, multiply the speed in kilometers per hour (88.51 km/h) by the conversion factor (0.2778 m/s / 1 km/h):
88.51 km/h * 0.2778 m/s / 1 km/h = 24.58 m/s
So, your speed is approximately 24.58 m/s when your car's speedometer reads 55.0 mph.