An open rail car of initial mass 10,000 kg is moving at 5m/s when rocks begin to

Question

An open rail car of initial mass 10,000 kg is moving at 5m/s when rocks begin to fall into it from a conveyor belt. The rate at which the mass of rocks increases is 500 kg/s. Find the speed of the car after rocks have fallen into the car for a total of 3s.

An open rail car of initial mass 10,000 kg is moving at 5m/s when rocks begin to fall into it from a conveyor belt. The rate at which the mass of rocks increases is 500 kg/s. Find the speed of the car after rocks have fallen into the car for a total of 3s.

Explanation / Answer

m2 = m1+500*3 = 10000+1500 = 11500

m1*v1 = m2*v2

10000*5 = 11500*v2

v2 = 4.35 m/s

Related Questions

Navigate

• Browse (All)
• Browse A
• Subjects

---

---

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