When Apollo 15 astronaut David Scott did his famous free fall experiment on the moon, he dropped a falcon feather from a height of about 1.6 meters. Assuming a gravitational acceleration of 1.6 m/s on the moon, about how long did it take the feather to drop to the surface? A) 1.0 seconds
B) 1.4 seconds
C) 1.6 seconds
D) 2.0 seconds