Answers to Problem Sheet 7

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Answers to Problem Sheet 7 Physics – Equations of Uniform Motion 11.1.5

2) Velocity in m/s 30 450 45 3 18 Time in s

2) cont…. Velocity in m/s 22 Answer fits here to fill in the unknown! 347.6 24.2 2.2 18 Now work out the total area under graph for distance travelled = 371.8 Time in s

3) Is solved using simultaneous equations Velocity in m/s In a 100m race we know total s = s1+s2 v S2 S1 1.5 10.49 Time in s Set up two equations one for each part of journey Add together and should = 100m As final “V” is the same for both sub into equation for s Velocity v is found