The crowd at a concert lifts a singer to a height of 2.2 m. The crowd uses a total force of 600 N. How much work has the crowd done?

when two balls of the different masses are dropped from equal height, they reach the ground at the same time .this is because they experience the same acceleration.

the acceleration is independent of mass.

thus when they are dropped they will always maintain the same velocity and travel the same distance (neglect air resistance of course) at the same time.

i would say

the right answer is 0.3 meters per second