A 4000 kg truck traveling with a velocity of 20m/s due south collides head on wi

Question

A 4000 kg truck traveling with a velocity of 20m/s due south collides head on with with a 1350 kg car traveling with a velocity of 10m/s due north. The two vehicles stick together after the collision A. What is the momentum of each vehicle prior to the collision b. What are the size and direction of the total momentum of the two vehicles after they collide A 4000 kg truck traveling with a velocity of 20m/s due south collides head on with with a 1350 kg car traveling with a velocity of 10m/s due north. The two vehicles stick together after the collision A. What is the momentum of each vehicle prior to the collision b. What are the size and direction of the total momentum of the two vehicles after they collide A. What is the momentum of each vehicle prior to the collision b. What are the size and direction of the total momentum of the two vehicles after they collide

Explanation / Answer

mt = 4000 kg

vt = 20 m/sec

Mpmentum = P = m*v

Pt = momentum of truck prior to collision

Pt = mt*vt = 4000*20 = 80000 kg-m/sec

mc = 1350 kg

vc = 10 m/sec

Pc = momentum of car prior to collision

Pc = 1350*10 = 13500 kg-m/sec

In collision when vehciles stick together, then using momentum conservation

Pi = Pf

Pt - Pc = Pf

Pf = 80000 - 13500 = 66500 kg-m/sec towards south

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