1. The problem statement, all variables and given/known data 1. Starting from rest, a car travels 1350m in one minute. It accelerated at 1m/s2 until it reached its cruising speed. Then it drove the remaining distance at constant velocity. What was its cruising speed? 2. A satellite is in a circular orbit 600km above the Earth’s surface. The acceleration of gravity is 8.21m/s2 at this altitude. The radius of the Earth 6400km. Determine the speed of the satellite and the time to complete of orbit around earth. 2. Relevant equations problem 1: d=1350m t=60sec a=1m/s2 a=v/t v=at2 v=d/t t1 t2 |___________.______________________> time x d1 d2 d1+d2=1350m t1+t2=60 secs d1=a(t1)squared d2=v(t)sqaured problem 2: r=600km+6400km=7000km=7,000,000m a=9.81m/(s)squared a=(v)squared/r v=d/t = pie*diameter/t 3. The attempt at a solution problem 1: i derived these two formulas d=a(t1)squared+v(t)squared d=a(t1)squared+v(t-t1) i don't know where to go from there because i have 2 unknown variables, v and t1. problem 2: (v)squared/7,000,000m=8.21m/(s)squared v=7580.897045m/s 7580.897045m/s=pie*(7,000,000*2)/t t=5801.727274s i got the answer for speed and time, but i'm not sure if i did it right.