On a frictionless air track, cart a hits cart b moving at a velocity of 2 meters per second to the right. which answer predicts what will happen?

Which is an example of gaining a static charge by conduction? a) rubbing a balloon against your hair. b) shuffling your shoes across a carpet. c) bringing a charged rod near an electroscope. d) touching your car on a cold day and getting a shock.

What kind of simple machine is a catapult?

What is the freezing point of radiator fluid that is 50% antifreeze by mass? kf for water is 1.86 ∘c/m.