If the car went 30 km west in 25 min. and then 40 km south in 35 min., what would be its average speed?

Truck traveling west on the highway experiences an acceleration to the east. what could be the cause of this acceleration

The speed of light in a material is 0.50 c. what is the critical angle of a light ray at the interface between the material and a vacuum?

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