Physics Notes PDF

an the gradien + (slobe) at any point gives speed of the object flat sections are where it stops...

an the gradien + (slobe) at any point gives speed of the object flat sections are where it stops 11 Steeper graphs : going faster decreasing gradient means it's slowing down speed : =, Gradient Zel (2-He · Is speed aldistanc total 6 : -changeinrelocitya fas "incial assert e 2. g A cat accelerates from 2m/s to 6mIs in 56s · Finds acceleration & a = A T a b : : a = 0 71. m/g  finalregimes - Distance (m/ v 42 + 29s = ~ acceleration (m(s) A van travels at 23m/s starts declerating uniformly at 2. 0m/s" as it heads towards a built-up area 112m away. What is it's speed when it reaches the built up ! v = 42 + 29S v2 23+ 2/2 0)/112) =. v = 81 v= v: 9 M/S it no - it and Distance using V 42 + 298 = findlt- types of motion water buoyany Duh! thrust pull ↑ air resistance p ↑ ↓ 8 weight ↓ weight Vector : has magnitude & direction forc acceleration · velocity scalar : only magnitude temperature · mass speed Newton's second law : If forces are unbalanced the object will accelerate or decillorate -train Ta aceratinis mass (kg)  W/weight /NI weight-caused by pulling of gravity : a force IN 110 m/s ( can differ m x g = - mass : amount of "stuff" in an object A mass(kg ( : /(g) Stay the same : 1 - Gradient : Acceleration 2- flat second : steady speed 3-the Steeper the graph the greater the acceleration 1/) : acceleration 1)) = deceleration 4- area under graph is equal to the Distance 5 - Are means changing acceleration acceleration cradient : =:1 5M. Distance travelled from : 80-100 sees = 100 80 - : 20 : 50-0 = 50 = bxh = 28x58 = 1000 M factors affecting stopping Distance speed of car Reactionrime Road conditions condition of Tires/Blakes stopping Distance : total distance travelled during the time it takes to stop in an emergency  stopping Distance thinking Distance : + Braking Distance Affect Thinking Distance speed of car Nacrion time/Depends on tiredness Distractions Alcohol + Drugs (. , Braking Distance : Distance travelled under the braking force in metres (m/ factors affecting Bra. D. · speed of car Road conditions · condition of Fines/Brakes Hooke's law · extension of an elastic object is directly proportional to the force applied up , to the limit to proportionality g If force Double e.. : extension Doubles · the limit of proportically 6 point which the relationship between forc & extension is no beyond longer Directly proportional extension spring constant f = kX)) (extension min i ↳ elastic Behaviour 6 Ability of material to recover it's original shape after the forces causing the deformation have been removed