Concept explainers
Free-Falling Object In Exercises 37 and 38. use the position function
When will the object hit the ground? At what velocity will the object impact the ground?
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Calculus
- If you travel 300 miles on the first day and then drive v miles per hour for t hours on the second day, then the total distance traveled over the teo-day period is given by d=300+vt miles. Use a formula to express v as a function of d and t for this two-day event.arrow_forwardEarthquake the graph shows the vertical acceleration of the Ground from the 1994 Northridge earthquake in Los Angles, as measured by a seismograph. (Here t represents the time in seconds.) (a) At what time t did the earthquake first make noticeable movement of the Earth? (b) At what time t did the earthquakes seem to end? (c) At what time t was the maximum intensity of the earthquake list reachedarrow_forwardCeramics When the temperature of a pot in a kiln is 1200, an artist turns off the heat and leaves the pot to cool at a controlled rate of 18 per hour. Express the temperature of the pot in degrees Celsius as a function of the time t in hours since the kiln was turned off.arrow_forward
- Flood Control A river is 8 feet above its flood stage. The water is receding at a rate of 3 inches per hour. Write a mathematical model that shows the number of feet above flood stage after t hours. Assuming the water continually recedes at this rate, when will the river be 1 foot above its flood stage?arrow_forwardc) Graph each of the two functions for a 2-min rided) Find the derivative of f(t) and g(t). Based on the graphs, what is the maximum height reached be the rider? When does this occur?e) Find the acceleration function for f(t) and g(t). Based on those derivative functions, what is the maximum vertical speed of the rider?arrow_forwardCalculusarrow_forward
- 9:01 45 X 3. The cost of a refrigerator is $700. On average, it costs $100 to provide the electricity for one year and the appliance will last for 15 years. a) [T-3] Determine a function that gives the annual cost of a refrigerator as a function of the number of years you own the refrigerator. Explain all of the components of the function in terms of the context. b) [T-3] Determine the total annual cost (cost each year) for a refrigerator. Make sure you include the cost of the electricity and remember, you have the refrigerator for 15 years.arrow_forwardWhat type of function is h?arrow_forwardThe lights in an auditorium are 9-pound discs of radius 18 inches. Each disc is supported by three equally spaced cables that are L inches long (see figure) I8 in (a) Write the tension Tin each cable as a function of L. T(L) Determine the domaln of the function. (b) Use a graphing utility and the function in part (a) to complete the table. (Round your answers to one decimal place.) 20 25 30 as 40 45 50 T. (c) Use a graphing utility to graph the function in part (a). y 6.0 13 5.5 12 5.0 11 4.5 10 20 40 60 80 100 20 40 60 80 100 3.0 y. 44 28 42 26 4.0 3.8 24 3.6 22 3.4 3.2 20 40 60 80 100 60 80 100 Determine the asymptotes of the graph. %3D (d) Determine the minimum length of each cable if a cable is designed to carry a maximum load of 38 pounds (Round your answer to the nearest integer. ) inarrow_forward
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