1. The 10-1b block has an initial velocity of 10 ft/'s on the smooth plane. If a force F = (2.5t) lb, where t is in seconds, acts on the block for 3 s, determine the final velocity of the block and the distance the block travels during this time. v= 10 fus F= (2.51) lb

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British Gravitational Bg System Of Units

Measuring is the comparison of a particular physical quantity with its reference value. A unit is a fixed physical quantity. The length is a physical quantity. A physical quantity is the product of a unit and the numerical value we need to compare with.