Revision: Dynamics Report a question What's wrong with this question? You cannot submit an empty report. Please add some details. 06 Dynamics - Revision Quiz Test your understanding of Dynamics here: 1 / 5 1) The diagram below shows the forces acting on an aeroplane. Which of the following is correct when the aeroplane is descending with a constant horizontal speed and an increasing vertical speed? Drag = Thrust and Lift < Weight Drag = Thrust and Lift > Weight Drag > Thrust and Lift < Weight Drag < Thrust and Lift = Weight 2 / 5 2) A box is moving horizontally at a constant speed towards the right along a smooth ground, and is about to enter a region where the ground is rough. What is the motion of the box as it moves onto the rough ground? The object continues moving at constant lower speed. The object stops immediately before the rough ground. The object decelerates to a stop then accelerates in the opposite direction. The object decelerates to a stop then remains at rest. 3 / 5 3) Which of the following cannot be the magnitude of the resultant force when two forces of magnitudes 7.0 N and 13.0 N act on an object? 13.0 N 10.0 N 5.0 N 20.0 N 4 / 5 4) A tension of 6000 N is experienced by the elevator cable of an empty elevator moving upwards with an acceleration of 2.0 m s-2. What is the mass of the elevator? 12000 kg 500 kg 750 kg 3000 kg 5 / 5 5) A man throws a stone vertically upwards. Ignoring the effect of air resistance, which row describes the magnitude and direction of the force acting on the stone after it leaves the man's hand? B A D C Your score is Restart quiz
