Question1
A bus travels 330 km south along a straight path with an average velocity of 84 km/h to the south. The bus stops for 22 min, then it travels 220 km south with the average velocity of 78 km/h to the south. How long does the total trip last?
Reply in units of h
Question2
A Cumulonimbus cloud (a thunderhead) can contain 109 kg of water. They have a vertical thickness that stretches from around 2,000 m to about 10,000 m above ground. If one supposes that Cumulonimbus clouds are uniform, how much gravitational potential energy do they have?