Question

A 6000kg truck travelling north at 5m/s collides with a 4000kg truck moving west at 15m/s,if the two trucks remain locked together after collision,find (a)with what speed and in what direction do they move immediately after collision?(b)what is the lost of kinetic energy of the two trucks after collision?
initial momentum north = final momentum north
so
6,000*5 = 10,000* Vn
same for west
4,000*15 = 10,000* Vw

speed = s = sqrt(Vn^2+Vw^2)
tan angle north of west = Vn/Vw

initial Ke=(1/2)[6000*25+4,000*225)

final Ke = (1/2)(10,000)s^2
Very wonderful and intelligent questions and genius solution

Related Questions

A truck of mass 2000kg travelling due south collides at an intersection with a car of mass 1200kg tr... A 500 car travelling at 45 km/hr towards west collides w/a 20000 kg truck travelling at 30 km/hr, 30... A 1000kg compact car is travelling north at 15m/s when it collides with a truck travelling east at 1... A railway truck travelling along a level track at 5.0 m s−1 collides with a truck of twice the ma...