A 900 kg car travelling east at 15 ms collides with 750 kg, Ask an Expert

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A 900 kg car travelling east at 15 m/s collides with 750 kg travelling north at 20 m/s. The cars stick together. Assume that any other unbalanced forces are negligible.

(a) what is the speed of the wreckage just after the collision?

(b) in what direction does the wreckage move just after the collision?

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