A construction worker is Carrying a load of 40 kg over his head and his walking at a constant velocity. If he travels a distance of 50 m, how much work is being done

Idon’t understand this.. will someone ? will mark brainliest along with 20 points.

What expression is equivalent to (2x-1)(x-3)?

The magnitude, m, of an earthquake is defined to be m=log l/s, where i is the intensity of the earthquake (measured by the amplitude of the seismograph wave) and s is the intensity of a “standard” earthquake, which is barely detectable. what is the magnitude of an earthquake that is 1,000 times more intense than a standard earthquake? use a calculator. round your answer to the nearest tenth.