#2.9
be able to use the equations for uniformly accelerated motion in one dimension:
\(s = \dfrac{(u+v)t}{2}\)
\(v = u + at\)
\(s = ut + \dfrac{1}{2}at^2\)
\(v^2 = u^2 + 2as\)
#2.10
be able to draw and interpret displacement-time, velocity-time and acceleration-time graphs
#2.11
know the physical quantities derived from the slopes and areas of displacement-time, velocity-time and acceleration-time graphs, including cases of non-uniform acceleration and understand how to use the quantities
#2.12
understand scalar and vector quantities and know examples of each type of quantity and recognise vector notation
#2.13
be able to resolve a vector into two components at right angles to each other by drawing and by calculation
#2.14
be able to find the resultant of two coplanar vectors at any angle to each other by drawing, and at right angles to each other by calculation
#2.15
understand how to make use of the independence of vertical and horizontal motion of a projectile moving freely under gravity
#2.16
be able to draw and interpret free-body force diagrams to represent forces on a particle or on an extended but rigid body
#2.17
be able to use the equation \(∑F = ma\), and understand how to use this equation in situations where m is constant (Newton’s second law of motion), including Newton’s first law of motion where a = 0, objects at rest or travelling at constant velocity
Use of the term terminal velocity is expected
#2.18
be able to use the equations for gravitational field strength \(g = \dfrac{F}{m}\) and weight \(W = \dfrac{m}{g}\)
#2.19
CORE PRACTICAL 1: Determine the acceleration of a freely-falling object.
#2.20
know and understand Newton’s third law of motion and know the properties of pairs of forces in an interaction between two bodies
#2.21
understand that momentum is defined as \(p = mv\)
#2.22
know the principle of conservation of linear momentum, understand how to relate this to Newton’s laws of motion and understand how to apply this to problems in one dimension
#2.23
be able to use the equation for the moment of a force, moment of force = Fx where x is the perpendicular distance between the line of action of the force and the axis of rotation
#2.24
be able to use the concept of centre of gravity of an extended body and apply the principle of moments to an extended body in equilibrium
#2.25
be able to use the equation for work \(∆W = F∆s\), including calculations when the force is not along the line of motion
#2.26
be able to use the equation \(E_k = \dfrac{1}{2} mv^2 \) for the kinetic energy of a body
#2.27
be able to use the equation \(∆E_{grav} = mg∆h \) for the difference in gravitational potential energy near the Earth’s surface
#2.28
know, and understand how to apply, the principle of conservation of energyincluding use of work done, gravitational potential energy and kinetic energy
#2.29
be able to use the equations relating power, time and energy transferred or work done \(P = \dfrac{E}{t}\) and \(P = \dfrac{W}{t}\)
#2.30
be able to use the equations
\(\text{efficiency} = \dfrac{\text{useful energy output}}{\text{total energy input}}\)
and
\(\text{efficiency} = \dfrac{\text{useful power output}}{\text{total power input}}\)