Force is a vector quantity and mass is a scalar quantity.

1. (a)(i)State how a vector quantity differs from a scalar quantity.[1]
2. (a)(ii)State one other vector quantity and one other scalar quantity. vector quantity ___________ scalar quantity ___________[2]
3. (b)An aeroplane flies through the air in a straight line, with its engines at full power. The weight of the aeroplane is 160kN. There is also a force of 320 kN acting upwards on the aeroplane at 30° to the horizontal. In the space below, use a graphical method to determine the size and the direction of the resultant of these two forces. Use a scale of 1.0cm : 40kN. size of resultant force = ___________ direction of resultant force = ___________[4]
4. (c)(i)An aeroplane is travelling in a straight line at a constant height. The aeroplane accelerates. State the energy change that is taking place as the aeroplane accelerates.[2]
5. (c)(ii)1.As the aeroplane accelerates, the pilot keeps the engines at constant power. The aeroplane eventually reaches a constant speed. Explain why the aeroplane stops accelerating and reaches a constant speed.[3]
6. (c)(ii)2.When travelling at a constant speed, the pilot directs the aeroplane into a tight turn that follows a circular path. Explain why the aeroplane is accelerating even though its speed is not changing.[3]