A bag of ballast is accidentally dropped from a balloon which is stationary at an altitude of 4900m. How long does it take for the bag to hit the ground?
A good equation to know for calculating time of falls due to gravity alone is:
Here, we can use
Use the equations of motion to answer the question.
It is given that balloon is stationary at height
As it falls in the downward direction, it accelerates with an acceleration of