How much power is required to lift a 12N box at 4.5m/s? A)2.6W
B)5.4W
C) 44W
D)54 W
pls add the formula you used too

wire in brush may conduct electricity from cell to drill and vice versa electrc shock possible

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.