Question: You are standing on a bathroom scale in an elevator in a tall building. Your mass is 64 kg. The elevator starts from rest and

You are standing on a bathroom scale in an elevator in a tall building. Your mass is 64 kg. The elevator starts from rest and travels upward with a speed that varies with time according to u(t) = (3.0 m/s²)t + (0.20 m/s³)t². When t = 4.0 s, what is the reading of the bathroom scale?

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