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Bonus: 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?
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Bonus: 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?

User TheJJ
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1 Answer

3 votes
a = (v - u) / t
a = (30 - 25) / 5
a = 5/5
a = 1m/s/s

F = ma
F = 75 x 1
F = 75N
User Russ Wheeler
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