You are calculating the acceleration for a ski jumper that slides down a take-of

Question

You are calculating the acceleration for a ski jumper that slides down a take-off ramp, which is inclined at an angle 0. The coefficient of kinetic friction between the skis and the snow is Starting from a freebody diagram and Newton's Law you find: Here, g is free fall acceleration. Let a1 be the acceleration for an athlete of mass m1. What is the acceleration for an athlete of twice that mass? A roller coaster cart approaches a sequence of two hills, the second twice as high as the first. At the top of the first hill, the cart has slowed down to half its initial speed. Which statement is correct?

Explanation / Answer

(4) The acceleration is independent of the mass of the athlet. The second atthlete also experience the same acceleration as the first one

Answer: (D)

(5) The hghest point of the second hill acts as a turning point. Eventhough the particle vecocity is zero at this point, the particle will pass over the second hill.

Answer: (D)

Related Questions

Navigate

• Browse (All)
• Browse Y
• Subjects

---

---

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