Can someone please help me with this question? The momentum of 12-kg dog racing to greet its owner, has a magnitude of 37kg * m/s. what is the dog's speed?

What distance does a car travel as its speed changes from 0 to 20 m/s in 17 s at constant acceleration?

In which of the following is positive work done by a person on a suitcase

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.