A rocket cruises past a laboratory at 0.400×106m/s in the positive x-direction just as a proton is launched with velocity (in the laboratory frame)v⃗ =(1.55×106i^+1.55×106j^)m/s. a. What is the proton's speed in the laboratory frame? b. What is the angle from the y-axis of the proton's speed in the laboratory frame? c. What is the the proton's speed in the rocket frame? d. What is the angle from the y-axis of the proton's speed in the rocket frame?

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