I am preparing for a physics test and i want to make sure what and how I am solving the review questions is correct because I have no answer key!Thank you in advance! 2-You are driving in your car at a steady 80.0km/h. and you suddenly see a stop sign. You apply your breakes and stop after 60.0m(or 0.06km). a)How long did it take you to stop? What I did was find Vavg=0.5(80.0km/h + 0.0km/h) then using it in the equation of delta d=Vavg.*delta t and getting an answer of 0.0015h. b)What was your acceleration? What I did was using the formula V2^2=V1^2+2a(delta d) and I solved to get a= (to appropriate sig fig) -53300km/h^2 3-During the span of 5.0s time interval an object begins at 5.0m/s, accelerates uniformly and ends at 20.0m/s. a) What is the average speed of the obect in this 5 s interval? What I did Vavg=0.5(20.0m/s + 5.0m/s)=12.5m/s b)What is the acceleration? What I did v2=v1+2a(t) 20.0m/s=5.0m/s+2a(5.0s) a= 3.0m/s^2 Thank you again!!