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A 1 kg object traveling east with 1.5 m/s collides with a 0.01 kg object traveling...

A 1 kg object traveling east with 1.5 m/s collides with a 0.01 kg object traveling north at 100 m/s. when they collide they become one object. what is the speed of the combined mass just immediately after they collide?

a) 1.49 m/s

b) 1.78 m/s

c) 2.48 m/s

d) 1.88 m/s

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