The present record for the 100 meter dash is 9.58 seconds. back in 1988, Johnson ran the 100 meter dash in the world record time of 9.79 seconds. He was later to lose both his record and his gold medal to runner up Lewis because of steroid use. Calculate Johnson's average speed, in meters/ second.
r = 100m/10.79s. = 9.27 m/s.
To calculate Johnson's average speed during the 100 meter dash, we need to divide the total distance covered by the time taken. In this case, the total distance is 100 meters, and the time taken is 9.79 seconds.
So, to find the average speed, we can use the formula:
Average Speed = Distance / Time
Average Speed = 100 meters / 9.79 seconds
Calculating this, we get:
Average Speed ≈ 10.21 meters/second (rounded to two decimal places)
Therefore, Johnson's average speed during the 100 meter dash was approximately 10.21 meters/second.