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Q. Optimus Prime is flying straight up at 77 m/s when he accidentally drops his mega-ray blaster and it falls 84 m to the ground below. calculate how long it takes for his mega-ray blaster to hit the ground.

Q. What is the apparent weight of a 75 kg astronaut 2500 km from the center of the earth's moon in a space vehicle accelerating toward the moon at 3.2 m/s^2.

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