They are traveling at 4.9 mph
You have to be traveling at about 80.67 feet per second.
If there is constant acceleration and deceleration then it would be 33.3 ft to stop
(42 miles/hour) x (1 hour) or 42 miles.
At 30 miles per hour you are traveling at 44 feet per second.
You are traveling at 88 feet per second at 60 miles per hour.
You are traveling at 6.14 miles per hour.
At 87 miles per hour you would be traveling 459,360 feet per hour OR 127.6 feet per second.
44 miles per hour is 64.53 feet per second.
At 50 miles per hour you are traveling 73.3 feet every second.
95.3333333 feet per second == you can literally type "65 miles per hour in feet per second" into google and it does unit conversions and math for you.
At two feet per second, you will travel 1.364 miles in one hour.
125840 feet in 22 minutes
About 20.45 miles per hour at 30ft/s