When an object accelerates, what about its motion changes?

speed changes, but not direction.

either speed or direction can change.

direction changes, but not speed.

neither speed or direction can change.

B) Either speed or direction can change

There are only two ways for you to accelerate: change your speed or change your direction—or change both. If you're not changing your speed and you're not changing your direction, then you simply cannot be accelerating—no matter how fast you're going.

they are made of gases.

they have a spherical shape.

they make energy through fusion.

answers: to make sure that all of the broken pieces of tablet were added to the water, to allow for fair comparison of all three trials, with different particle sizes to avoid experimental error