Question

In track races, especially the longer races, the runners start staggered, which means that they each start at their own starting point, not at the beginning race. This is to make sure that each runner is running the same distance. If the runner in the second lane begins 7 m ahead of the first runner and runs to the 407 m mark and takes 50.0 seconds, what is the runner's speed?​

Answer 1

To find the runner's speed, subtract the 7 meter head start from the 407 meter mark to get a distance of 400 meters. Divide this by the 50.0 seconds to calculate a speed of 8 m/s.

Step-by-step explanation:

The student is asking how to calculate the speed of a runner in a track race who starts 7 meters ahead of the first lane and crosses the 407-meter mark in 50.0 seconds. To calculate the speed, we use the formula:

Speed = Distance / Time

In this case, the runner has traveled 400 meters (407 - 7 = 400 meters, as the runner started 7 meters ahead). Dividing the distance by the time (400 meters / 50.0 seconds) gives us the runner's speed, which is 8 meters per second (m/s).