Work on yo Exercise 3.1.2 1. A hot-air balloon has a volume of 2800 m3 when the temperat of the air in the hot-air balloon is 98 °C. a) What is the volume of the air if it is cooled to 78 °C?

You throw a small rock straight up from the edge of a highway bridge that crosses a river. the rock passes you on its way down, 7.00 s after it was thrown. what is the speed of the rock just before it reaches the water 28.0 m below the point where the rock left your hand? ignore air resistance.

Heterogeneous mixture with larger particles that never settle is

The friction of the water on a boat produces an acceleration of -10. m/s2. if the boat is traveling at 30. m/s and the motor is shut off, how long it take the boat to slow down to 5.0 m/s?