Your friend decides to show you how fast his sports car can accelerate by puttin

Question

Your friend decides to show you how fast his sports car can accelerate by putting a penny on his forhead and slamming on the gas. To your surprise the penny stays on a vertical section of his forehead until your acceleration drops below a certain value as you reach your cruising speed, allowing the penny to fall into his lap.

Being a good physics student you quickly calculate the coefficient of static friction between the penny and his forehead after glancing down at his accelerometer which reads 16.9m/s^2 right before the penny starts to fall.

So what was the coefficient of static friction again?

A) 0.58 B) 0.50 C) 0.33 D) 1.7 E) Not enough information provided.

I know the answer is A, but I do not know how to do the steps. Can someone please work it out for me I greatly appreciate it.

Explanation / Answer

answer is A) 0.58

Related Questions

Navigate

• Browse (All)
• Browse Y
• Subjects

---

---

Integrity-first tutoring: explanations and feedback only — we do not complete graded work. Learn more.