ALP quuuuuuuuiiiiiiiiiiizzzzzzzzz('_')

What are the Happy and Sad balls made of?

What do the two balls differ in?

True or false. The lower the hysteresis the higher it bounces.

Explain how a rattle back work.

Explain how a Newtons Cradle

Electricity only works when it is a ______.

Answer these next questions HONESTLY, ok?

Were you able to keep up to what I was saying?

Could you hear me?

Did you like my presentation?