A dynamite blast blows heavy rock straight up with a lunch velocity of 160 f/sec. It reaches a height of s=160t -16t after time (sec) a- How height does the rock ago? b- what are thw velocity and speed of the rock when its 256 ft above the ground on the way up ? on the way down? c- what is the acceleration of the rock at any time t during its flight (after the blast)? d- when does the rock hit the ground again?

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Statements and Logic

Logic is the analysis of general patterns of thoughts without regard to any specific sense of context.