Exercise 8.54 Part A A 1200-kg SUV is moving along a straight highway at 12.0 m/

Question

Exercise 8.54 Part A A 1200-kg SUV is moving along a straight highway at 12.0 m/s. Another car, with mass 1800 kg and speed 20.0 m/s, has its center of mass 40.0 m ahead of the center of mass of the SUV (Figure 1) Find the position of the center of mass of the system consisting of the two cars. Express your answer using three significant figures m behind the leading car Submit My Answers Give Up Part B Find the magnitude of the system's total momentum, by using the given data. Express your answer to three significant figures and include the appropriate units Figure 1 of 1 PValue Units Submit My Answers Give Up 1200 kg 1800 kg 12.0 m/s 20.0 m/s Part C 40.0 m Find the speed of the system's center of mass. Express your answer to three significant figures and include the appropriate units. Vcm, x = 1 Value II Units !

Explanation / Answer

  a) x = 1800kg * 40m / (1800+1200)kg = 24 m ahead of the s.w.
b) p = 1800kg * 20m/s + 1200kg * 12m/s = 50 400 kg·m/s
c) v = 50400kg·m/s / 3000kg = 16.8 m/s
d) p = Mv = 3000kg * 16.8m/s = 50400 kg·m/s
e) same!

Related Questions

Navigate

• Browse (All)
• Browse E
• Subjects

---

---

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