a. Two vehicles travelling on a road in the same direction collide. Vehicle t ha

Question

a. Two vehicles travelling on a road in the same direction collide. Vehicle t has a mass 1200 kg and is travelling at 30m/s. Vehicle 2 has a mass 900 kg and is travelling at 45nls. Assuming that the cars momentarily lock together and continue moving in the same direction determine the new velocity (combined) of the cars after .the collision b. Determine the change in momentum of each vehicle. c. if the time of deceleration of vehicle 2 during the collision is 0.15 seconds determine the average force acting on this vehicle during this time. d. determine the average force acting on vehicle 1 during the 0.15 seconds.

Explanation / Answer

a) by conservation of momentum,,,,,,,,,,,,,,,,,,,1200*30 + 900*45=(1200+900)*V,,,,,,,,,V=combined speed=36.428 m/s,,,,,,,,,,,,,,,,,,,,,,,change in momentum=1200(36.428-30)=7714.3,,,,,,,,,,,,,,,,change in momentum=900(36.428-45)=-7714.3,,,,,,,,,,,,,,,,,,,,,,,,,,,,,c) t=0.15 sec,,,,,,,,,,,,,,a=36.428/0.15=242.85 m/s2,,,,,,,,,,,,,,,,average force=900*a=900*242.85=218568 N,,,,,,,,,,,,,,,,,,,,,,,,,,d) average force=1200*a=1200*242.85=291420 N

Related Questions

Navigate

• Browse (All)
• Browse A
• Subjects

---

---

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