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Additional Science Physics 2a: Motion (1) In this topic I can: P2a.1 Explain that velocity differs from speed because it has a direction P2a.2 Construct distance-time graphs and identify when an object is stationary and moving at a steady speed. P2a.3 P2a.4 P2a.5 P2a.6 P2a.7 Construct a velocity-time graph for objects moving with a constant velocity and constant acceleration. Explain that the slope of distance-time graph represents the speed of an object Calculate the velocity of an object given the distance travelled and the time taken. Explain how the slope of a velocity-time graph represents the acceleration of an object Calculate the acceleration of an object given its change in velocity and the time taken for the change to happen. I have studied: I understand: 123 123 123 123 123 123 123 P2a.8 Recall that the area under the line of a velocity-tie graph represents the distance the object has moved. 123 P2a.9 Describe how forces are responsible for an object’s change in velocity 123 P2a.10 Describe how forces can combine to produce a resultant force and how it affects the object’s motion 123 P2a.11 Recall and use the equation: force(N) = mass(kg) x acceleration(m/s2) (F = ma) 123 P2a.12 123 Describe how some forces oppose motion and can be used to slow/stop a moving object P2a.13 Describe how various factors affect the time taken for a vehicle to stop P2a.14 Explain why a falling object reaches a terminal velocity 123 P2a.15 Higher use a distance –time graph to calculate the speed of an object. 123 P2a.16 Higher Use a velocity-time graph to calculate (a) the acceleration of an object, and (b) the distance it has travelled. Additional Science Physics 2a: Motion(2) In this topic I can: P2a.17 Recall that when a force causes an object to move energy is used and work is done P2a.18 Describe how the work done is equal to the amount of energy transferred I have studied: I understand: 123 123 P2a.19 Recall and use the equation: work done = force applied x distance moved (J) (N) (m) 123 P2a.20 123 Recall that frictional forces transfer most energy into heat P2a.21 Describe how changing the shape of some objects results in energy being stored as elastic potential energy 123 P2a.22 Recall the kinetic energy of an object depends on its mass and speed 123 P2a.23 123 Recall that moving objects have momentum which has both size and direction P2a.24 Use the equation: momentum = mass x velocity (kg m/s) (kg) (m/s) P2a.25 Recall that a force acting on a moveable object changes its momentum 123 123 P2a.26 Recall that momentum is not lost during a collision between two bodies, provided there is no external force acting 123 P2a.27 Higher use the following equation to calculate kinetic energy: kinetic energy = ½ x mass x speed2 . (J) (kg) ((m/s)2) 123 P2a.28 123 Higher use the equation: force(N) = change in momentum (kg m/s) time taken for the change (s)