Figure 2.31 shows how the velocity of four cars changed as they travelled along a straight road. Give reasons for your answers to
these questions
(a) Which car was travelling at a steady speed?
(b) Which car was decelerating?
(c) Which car had the greatest acceleration?​

How does the amount of energy required to hold each proton and neutron in the nucleus compare to the energy released when they are removed?

Part 1: a magnetic levitation or maglev train rides rails without touching them. explain how this works using your data. include the appropriate magnet drawing in your answer. part 2: two objects are near a bar magnet. one is about 1 cm away, while the other is 6 cm away. compare and contrast the magnetic force that affects each object. use your data to answer the question

Imagine that you have two balloons (or, better yet, actually inflate two balloons, if possible). create static electricity around one of the balloons by rubbing it against your hair or your sweater and then bring that balloon close to the other balloon, which has not been charged. try this with at least one other object—and for variety in the discussion, avoid using an object already described by your classmates. then, for your initial post to the discussion, answer the following questions: what happened with the two balloons?