A football field is about 10000 cm long. If it takes a person 20 seconds to run its length , how fast was the football player running?

v=d. V = 100m V- 5 mis. 5m/sec=300m/min=18km/hr. Explanation: 100 m20 sec=10 m2 sec=5 m/sec. 5 m sec ×60 sec 1 min=300 m/min. 300 min ×60 min 1 hr=18000205. 2.

Explanation:

answer

the ions in solute supperate from eachouthere

8 m/s because for him to get the same amount of energy as ray is putting out, bobby, who weighs half as much as ray, needs to run twice as fast.