A champion weightlifter raises a 200kg set of weights from the floor to above his head in one movement.
The bar is lifted through a vertical distance of 1.8m.
When the lift is completed the weightlifter holds the weights stationary for 2.0 seconds and then drops them to the floor.
[see diagram below]
At what speed do the weights hit the floor?
(gravitational field strength = 10N/ kg)
A. 0.90 m/ s
B. 1.1 m/ s
C. 3.0 m/ s
D. 3.6 m/ s
E. 6.0 m/ s
F. 9.0 m/ s
G. 18 m/ s
H. 36 m/ s