What is a vector?​ - A measurement (quantity) that has a size AND direction​, What is the difference between distance and displacement​ - Distance is how far the total journey is whereas displacement is the distance from start to finish over the shortest distance​, What is the unit of force?​ - The newton, N​, What is the unit of mass?​ - The kilogram, kg​, Why do we take repeat readings?​ - To reduce the effect of random errors and calculate a mean​, When does a graph show direct proportionality?​​ - When it is a straight  line through the origin​, How do we tell which set of results are the most precise?​ - The set with the smallest range​, How do we calculate resultant force​ - Find the difference between forces in opposite directions​, Why are cars and other vehicles streamlined?​ - To reduce drag and give a bigger RESULTANT force to accelerate them​, What is acceleration?​ - Speeding up​, What is deceleration?​ - Slowing down (negative acceleration)​,

P1 Forces and motion Year 8

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