Unless you have a broken speedometer, you are traveling at 55 mph.
55mph is about 88.5km/h
Relative to your car, the bug is travelling at whatever speed the bug normally flies at; this would almost certainly be less than 55mph. Relative to the road, the bug is travelling at 55mph, plus whatever its speed inside the car is: * If the bug were moving from front to back (of the car), it is travelling at slightly less than 55mph; * if moving from back to front, it is moving at slightly more; * if travelling side to side, it is also traveling at slightly more than 55mph - vector addition of velocities shows this; * if staying still inside the car, it is travelling at 55mph.
55mph = 88.5km/h
Use a GPS ^ posted by someone else What you want to do is drive with traffic and watch your tachometer. That is the RPM gauge, if your car has one. By marking the tach you can tell your approximate speed at any given time. You need to watch what RPM's you shift at, if you are in fifth gear cruising at 55mph then look at where your RPM's are... they will always be really close that in 5th gear at 55mph. You can then use that as an easy way to tell your speed with a broken speedometer.
when traveling at 55mph, how many feet do you need to stop
1,243.6 seconds to cover 19 miles at 55mph
Yes at all 4 fcorners, but your speedometer will be off alittle(56mph actual speed at 55mph displayed).
52.8 seconds to travel 4,260 feet @55mph