the country was Italy
That man would be Galileo Galilei, and he was from Italy.
Galileo
as done in Galileo's experiment when he dropped a large rock and a feather from a tall tower both hit the ground at the same moment when dropped from the same height.
The United States.
The United States.
There is no evidence, the bomb was dropped as a war weapon.
Galileo Galilee dropped two balls off of the top of the Leaning Tower of Pisa. One was wooden and the other was a cannon ball. He dropped them at the same time to see which one would hit the ground first.
In his gravity experiment Galileo dropped objects form the Leaning Tower of Pisa, in Italy.
Galileo's experiment to show that mass had little effect on the speed of falling objects involved two cannonballs of different sizes being dropped from a certain height. This showed that, in a vacuum at least, falling objects fall at the same speed no matter their mass.
A team of scientist under the command of Robert Opperheimer.
The United States.