Force and Motion

A hammer hits a nail with a downward force of 50N.What is the size and direction of the force of the nail on the hammer?

When a student is standing at rest on a bathroom scales, the scales read 500N. What is the size and direction of the force of the student on the scales?

Calculate the weight of a person on Moon whose mass is 50kg on Earth. Moon's gravitational field strength is 1.6 N/kg.

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