What events led to the downfall of the soviet union?

The unsuccessful August 1991 coup against Gorbachev sealed the fate of the Soviet Union.

Explanation:

Planned by hard-line Communists, the coup diminished Gorbachev's power and propelled Yeltsin and the democratic forces to the forefront of Soviet and Russian politics.

we can solve this via the kinematic equation:

where the vertical velocity is zero and so:

since the height of the building is 29.3 meters then:

the ball was in motion for approximately 2.45 seconds

answer; nonpartisan election;