How does the rider’s ability to stop the bike change as the bike moves down a steep hill

The diagram shows the positions of the sun, moon and earth during spring tides, when the high tides are at their highest and low tides at their lowest. what is it about these positions that causes these high and low tides?

What is the correct term for living the most sustainable life you can within your current circumstances?

Design techniques and materials that reduce the negative environmental impact of a structure are referred to as