Q: Answer the question

Which of these substances conducts electricity the best?

A: Copper


Q: Answer the question

A bus traveled 280 kilometers between two cities. It left the first city at 3:00 p.m. and arrived at the second city at 7:00 p.m. What was the average speed of the bus during the trip?

A: 70 km/h


Q: Answer the question

Which material should be used on a bicycle ramp to increase friction?

A:
rough paper