Ablock of wood, which is 12.0 cm long, is dropped through an infrared sensor designed to measure the time that the sensor is blocked. assuming that this block of wood blocks the sensor for a time interval of 0.27 seconds, what is the speed of this block as it passes through the sensor? is this speed “average” or “instantaneous”?
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The chart shows the costs and shipping times for materials that a company needs to build a new product. which describes the best trade-off if the company needs to start building their product within the next two years? they should order the domestic materials because it is always best to choose the fastest shipping time. they should order the imported materials because it is always best to choose the lowest cost for materials. since the shipping time is longer, they should order the domestic materials because the additional cost is worth it to get the materials in time. even though the shipping time is longer, they should order the imported materials because they are less expensive and should arrive in plenty of time to build the product.