A certain object weighs 150.0 Newton’s at the earth's surface. Determine the mass of the object (in kilograms) and its weight (in newton’s) when located on a planet with an acceleration of gravity...

A certain object weighs 150.0 Newton’s at the earth's surface. Determine the mass of the object (in kilograms) and its weight (in newton’s) when located on a planet with an acceleration of gravity equal to 4.0 m/.

A person having a total mass of 80.0 kg rides an elevator. Determine the force (in Newton) exerted on the floor of the elevator when it is accelerating upward at 5.0 m/.