If velocity is positive, which would most likely yield a negative acceleration?
A. A final velocity that is faster than an initial velocity.
B. A time that is less than a half hour.
C. An initial velocity that is faster than a final velocity.
D. A time that is greater than a half hour.
please answer quickly

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 5655 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.