AQA A Level Physics – Mechanics Questions And Answers

AQA A Level Physics – Mechanics Questions And Answers A physical quantity that has magnitude only. A quantity that has magnitude and direction. The vector sum of two or more vectors. A diagram showing all the forces acting on an object All forces acting on an object a balanced and cancel each other out. There is no resultant force. The amount of matter in an object. A measure of the gravitational force exerted on an object. The turning effect of a force around a turning point. The sum of the clockwise moments is equal to the sum of the anticlockwise moments for a body to be in equilibrium. A rigid bar that is free to move around a fixed point. A pair of forces of equal size which act parallel to each other but in The point at which the whole mass of the object appears to act through. How fast an object is moving regardless of direction. How far an object's travelled from its starting point in a given direction (s). Speed in a given direction (u & v). The rate at which velocity changes (a). The speed and direction of an object at a particular moment in time. The velocity of an object will not change unless a resultant force acts on it. The acceleration of an object is proportional to the resultant force acting on it. If an object A exerts a force on object B, the object B exerts an equal but opposite force on object A. When the only force acting on an object is gravity. An object given an initial velocity and then left to move freely under gravity.