(ii) Stot=V12−V022a+V1⋅t2≈180.9mS{tot}=\frac{V_1^2-V_0^2}{2a}+\frac{V_1\sdot t}{2}\approx180.9mStot=2aV12−V02+2V1⋅t≈180.9m , whereV1=72km/h=20m/s,V0=45km/h=12.5m/s,t=12s,a=2m/s2V_1=72km/h=20m/s,V_0=45km/h=12.5m/s,t=12s,a=2 m/s^2V1=72km/h=20m/s,V0=45km/h=12.5m/s,t=12s,a=2m/s2
(i)
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