A girl throws a softball with an acceleration of 38 m/s. It hits with a force of 19 N. What is the mass of the softball?

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

True or false when elements combine to form a mixture, the resulting chemical properties may be very different from those of the elements that make it.

When a bicycle coasts uphill, it moves slower and slower as it climbs. why? a. its kinetic energy is transforming into heat energy. b. its potential energy is transforming into kinetic energy. c. its kinetic energy is transforming into potential energy and heat energy. d. its potential energy is transforming into kinetic energy and heat energy.