Let’s say a small person with a mass of 50 kg walks up two flights of stairs. a heavy person with a mass of 105 kg walks up the same stairs. who did more work and why?

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Quantum mechanics applies to subatomic, atomic, nanometer-size, and micrometer-size systems. nanometer, micrometer, and kilometer-size systems. atomic, nanometer-size, and micrometer-size systems. subatomic, atomic, and nanometer-size systems.

Sort the images based on whether there's a force of attraction or repulsion between the magnets shown. attraction repulsion

The velocity of a car traveling in a straight line increases from 0 meters/second to 30meters/second in 8 seconds. what is the average acceleration of the car?