Could someone try to help me solve those 3 questions by giving me clues or equations?

With what speed (SI Units) must a ball be thrown directly upward so that it remains in the air for 12.5 second?

An object of mass 197kg is at rest. If a force of 2.5N is applied for 30 seconds, what will its final velocity be?

How much work is done by slowly lifting a 1.75kg sack of flour to a height of 2.0m?

1 answer

U R dumm
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