Q: Traveling in opposite directions, buses A and B are passing each other at the relative speed of 25 km/h, while a passenger on bus A walks toward the back of the bus at the speed of 5 km/h. What is the velocity of the passenger on bus A relative to bus B?
A: 20 km/h in the direction of bus A
Q: Which living organism makes its own food using sunlight?
A: tree
Q: Smoking harms the body in many ways. It is most harmful to which organ?
A: lung
Q: Alex looked at an electric toothbrush that had a plug with three metal prongs. Why are these prongs made out of metal?
A:
Metal is a conductor and completes a circuit when you plug it into the outlet.