Example of using the scientific method in a real life problem

If the force on an object is in the negative direction, the work it does on the object must be [2 points a) negative. b) positive c) the work could be either positive or negative, depending on the direction the object moves

Clothes dryer uses about 7 amps of current from a 240 volt line. how much power does it use?

If a balloon is taken outside on a very cold day, what will occur?