A body has an initial velocity of 45km/h and is accelerated uniformly at 2m/s2
until its velocity is 72km/h after which is brought to a rest with a uniform retardation, if the total remaining time is 12 seconds;
i. Sketch the velocity-time graph
ii. Calculate the total distance covered.
1
Expert's answer
2020-06-11T10:34:57-0400
(ii) "S{tot}=\\frac{V_1^2-V_0^2}{2a}+\\frac{V_1\\sdot t}{2}\\approx180.9m" , where"V_1=72km\/h=20m\/s,V_0=45km\/h=12.5m\/s,t=12s,a=2 m\/s^2"
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