A boy rides a bicycle downhill and covers 40 metres in 3 minutes. Find the velocity with which he is travelling?
What is the step by step process for that answer?

Jackson is designing a new heater, and he wants to experiment with different thermally conductive materials. which of these materials would be useful in conducting heat?

What do you think car designers do if the damage caused by a crash test is too severe?

The freezing and boiling point of a substance changes as the air pressure around it changes. for example, at a lower air pressure (higher altitude) it is easier for water molecules to escape from liquid into the air. in a high altitude city such as denver, colorado compared to a sea-level city such as houston, texas, water