1) The diagram below shows a set of traffic lights suspended over a road junction using cables tied to two poles.

2) In deep outer space, there is no gravity. If a force acts on an object, it will gain a great speed after some time.

What is the speed of a 100 g mass if a force of 2.0 N acts on it for 2 days?

The mass is initially at rest.

3) The diagram below shows the forces acting on an aeroplane as it approaches Changi Airport.

Which of the following is correct when the aeroplane is descending vertically with a constant speed and decelerating in the horizontal direction?

4) Three forces P, Q and R act on an object. Which of the following diagrams correctly show the forces to be at equilibrium?

5) A lady of weight W stands inside a lift. The lift is moving upwards at a constant acceleration. Let the normal contact force exerted on the lady by the floor be R.

Which of the following statements is/are correct?

(1) R is greater than W in magnitude.
(2) R and W are in opposite directions.
(3) R and W form an action-and-reaction pair according to Newton's third law of motion.