Answer:
Mainstream understanding is that a sneeze is 100 mph, or ~45 m/s. However, this isn't even close to being true.. A study in 2013 (see link below) was conducted where they investigated the airflow dynamics of sneezing and breathing, and discovered that the highest velocities of a sneeze are around 10 mph, or 4.5 m/s.
Step-by-step explanation: