Final answer:
The typical speed limits are 25 mph in school zones, 35 mph in business areas, and 65-70 mph on highways, while 80 km/h is approximately 22.2 m/s and 49.7 mi/h.
Step-by-step explanation:
The speed limit in a school zone, business area, and highway can vary depending on the jurisdiction, but typical speed limits are 25 mph for a school zone, 35 mph for a business area, and 65 or 70 mph for a highway.
However, these can differ, so it's always important to check local traffic laws.
To answer the question about converting speeds, the speed limit on some interstate highways is roughly 80 km/h; this can be converted to meters per second and miles per hour. Using the conversion factors, 80 km/h is approximately 22.2 m/s and 49.7 mi/h.