Asked by Mostafa

a 2000kg car travelling west with a speed of 20m/s collides at an intersection with a 3000kg car travelling south at a speed of 20m/s. find the direction and magnitude of the velocity of the wreckage after the collision, assuming the collision was perfectly inelastic(that is, they stick together).

Answers

Answered by Damon
west inertia before = west inertia after

2000 * 20 = 5000 * Vwest

south inertia before = south inertia after

3000 * 20 = 5000 * Vsouth

V = sqrt (Veast^2+Vsouth^2)

tangent of angle west of south = Vwest/Vsouth

compass course = 180 + that angle
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