You are on roller blades on top of a small hill. your potential energy is equal to 1,000.0 joules. the last time
you checked your mass was 60.0 kilograms.
a. what is your weight in newtons?
b. what is the height of the hill?
c. if you start skating down this hill, your potential energy will be converted to kinetic energy. at the
bottom of the hill, your kinetic energy will be equal to your potential energy at the top. what will be
your speed at the bottom of the hill?

Consider a file currently consisting of 200 blocks. assume that the file control block (and the index block in the case of indexed allocation) is already in memory. calculate how many disk i/o operations are required for contiguous, linked, and indexed (single-level) allocation strategies, for each of the conditions listed below. in the contiguous-allocation case, assume that there is not room to grow at the beginning but there is room to grow at the end. also assume that the block information to be added is stored in memory.