Question

The function h defined by h(t)=(49 + 4.9t)(10 - t) models the height, in meters, of an object t seconds after it is dropped from a helicopter.
Find or approximate the time when the object hits the ground. Explain your method.

Answer 1

10 seconds! you put in 0 for h, and then set the parentheses to equal zero. it can’t be negative, so it must be 10.