Question

what is the acceleration of an object after it has been in free fall for 1 seconds?
10 m/s/s
40 m/s/s
4 m/s/s
2.5 m/s/s

Explanation:

Step1: Recall free - fall acceleration

Near the surface of the Earth, the acceleration of an object in free - fall is constant and is approximately $g = 9.8\ m/s^{2}\approx10\ m/s^{2}$. It does not depend on the time the object has been in free - fall.

Answer:

10 m/s/s