A. Does the magnet have to be touching the nail to lift the tack or paper clip? b. How close does it have to be? Experiment with different sized magnets.

c. Does the size of the magnetic field change with the size of the magnet?

Which articulations allow for greatest range of motion?

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.

Which of the following is not a means to accelerating? question 4 options: a)increase speed b)remain still c)decrease speed d)change direction