The world's tallest building is the Burj Khalifa in Dubai, UAE. The viewing gallery for the public is on the 124" floor. The lift that visitors use takes seconds to reach this floor. The motion of the lift can be divided into three parts: Acceleration Constant velocity of 10 ms Deceleration " Draw a free body force diagram showing the forces acting on a passenger as the lift aceclerates upwards [3 marka]a) Draw a free body force diagram showing the forces acting on a passenger as the lift accelerates upwards (2 marks] bj A physics student of mass 60 kg decides to measure the initial acceleration of the lift. She places a set of scales on the floor of the lift and steps on to them. Whilst the lift is accelerating upwards the reading on the scales increases to 73kg. ij Calculate the initial acceleration of the lift, (5 marks) I Hear the end of the ascent, the velocity of the lift decreases from 10 ms to rest in 5.3 seconds. Calculate the deceleration. (2 marks]