To test an elevator's company emergency braking system, an elevator is allowed to free fall for 11.5 meter before the emergency breaking system exerts a constant 12,960 N force on the elevator to slow the elevator's descent. a)Draw a Free Body Diagram?

b) What is elevator maximum speed?

c) How long is the elevator in the free fall?

d) The ground is 120 meter below the elevator's starting height. Will the elevator hitting the ground. The mass of the elevator is 1200 Kg.

e)If the Elevator does not come to rest before hitting the ground, How fast the elevator will be when it hits the ground?