An object is launched upward at the height of 200 meters. Its height can be modeled byh=−4.9t2+90t+200, where h stands for the object’s height in meters, and t stands for time passed in seconds since its launch. The object’s height will be 240 meters twice before it hits the ground. Find how many seconds since the launch would the object’s height by 240 meters. Round your answers to two decimal places if needed. The object’s height would be 240 meters the first time at seconds, and then the second time at seconds.

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Half Life

The concept of Half Life has numerous practical applications some of them includes figuring out the effective drug dosage to finding out when a radioactive becomes safe to use. If you look for a career in Nuclear Physics you will need this concept.