An orange is thrown vertically upward with a speed of 4.9 m/sec from a height of 9.8 meter. Assume that there is no air resistance. The acceleration due to gravity is 9.8 m/sec2 downward. Be able to follow the comment. No physics method
Use differential equation(s) to answer the followings.
(A) When does the orange hit the ground?
(solution)
(B) How fast is the orange moving when it hits the ground?
(solution)
2. According to Newton's Law of cooling and heating. A cup of hot tea initially at 98*C cools to 88*C in 2minutes while sitting in a room temperature 18*C When will the temperature of the tea reach 58*C? Find the exact time