HEP A runner has a speed of 25 m/s. They see the finish line and speed up to 30 m/s. This happens in 5 seconds. IF the runner has a mass of 75 kg, with what force did the runner cross the finish line?
-Explanation needed

75 N

Explanation:

F= ?

V1 =25 m/s

V2= 30 m/s 5s

M= 75 kg

A= v2-v1/t

A= 30-25/5

A= 1 m/s

F= 75 kg

M= 75 kg

A= 1 m/s

F= ma

F= 75(1)

F=75 N

I hope this helps, I’m only in the 8th grade and this is what my teacher taught us how to do it <33

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blood enters the heart through two large veins, the inferior and superior vena cava, emptying oxygen-poor blood from the body into the right atrium of the heart. as the ventricle contracts, blood leaves the heart through the pulmonic valve, into the pulmonary artery and to the lungs where it is oxygenated.