Observing a spacecraft land on a distant asteroid, scientists notice that the craft is falling at a rate of 5 m/s. when it is 100 m closer to the surface of the asteroid, the craft reports a velocity of 8 m/s. according to their data, what is the approximate gravitational acceleration on this asteroid?

a. 0 m/s2
b. 0.03 m/s2
c. 0.20 m/s2
d. 0.65 m/s2
e. 33 m/s2

The lid of a pressure cooker forms a nearly airtight seal. steam builds up pressure and increases temperature within the pressure cooker so that food cooks faster than it does in an ordinary pot. the system is defined as the pressure cooker and the water and steam within it. if 2.0 g of water is sealed in a pressure cooker and then vaporized by heating, and 5127 j must be added as heat to completely vaporize the water, what is the change in the system’s internal energy? answer in units of j.