Introduction & History of the Bill of Rights. The original Constitution, as proposed in 1787 in Philadelphia and as ratified by the states, contained very few individual rights guarantees, as the framers were primarily focused on establishing the machinery for an effective federal government.
There are 60 seconds in a minute and 60 minutes in an hour; 60 * 60 = 3,600 seconds in an hour. 3,600 / 45 seconds = 80. And to cross-check: 80 mph * 5,280 feet in a mile = 422,400 feet per hour / 60 = 7,040 feet per minute / 60 = 117 1/3 feet per second * 45 seconds = 5,280 feet in 45 seconds.
Speed limits. You must not drive faster than the speed limit for the type of road and your type of vehicle. The speed limit is the absolute maximum - it doesnât mean itâs safe to drive at this speed in all conditions. A speed limit of 30 miles per hour (mph) or 48 kilometres per hour (km/h) usually applies, unless you see signs showing otherwise.