A helicopter is ascending vertically with a speed of 5.10m/s. At a height of 105 m above the Earth, a package is dropped from a window. How much time does it take for the package to reach the ground?

The time taken for the package to reach the ground is 20.6s

Explanation:

Given that the formula of distance is D = S×T where S represents soeed and T is time. So you have to substitute the following values into the formula :

what is the speed of a softball that travels 20m in 2secs

speed = 20/2 = 10 m/s

according to jean piaget, in what stage of cognitive development are children able to understand conservation task?

b. preoperational

just took it