*15 points* for both ramp heights, you calculated the average speed for the car's entire motion (both on
the ramp and the floor), as well as the average speed for two intervals of the same motion
(interval on the ramp and interval on the floor). write a brief paragraph on how these
"intervals" describe the car's motion more accurately than the average speed of the
entire motion. be sure to explain how this accuracy could have been improved by breaking the
car's motion down into even smaller intervals.

20) what is a magnetic field? 21) in which direction do magnetic field lines always point? 22) sketch a diagram showing how a plotting compass points around a 23) name two magnetic poles that will: a) attract each other b) repel each other. 24) explain why you can use a compass to navigate. 25) what's an electromagnet? 26) list two ways to increase the strength of an electromagnet. 27) the wire in a simple motor feels a force when a current flows through it. why is this? i need answers to check mine