Hey guys, as always I think this forum could be a life line for me...
A car is initially at 18km per hour and travels at this velocity for 44 seconds; it then accelerates to 45 km per hour in 30 seconds and stays at this velocity for 56 seconds. What is the total distance covered by the car in the 130 seconds described?
This is how I've calculated it...
18000/60/60=5, 5*44=220
45-18=27, 30/27=0.9, 1/2 (5+12.5)*30=262.5
45000/60/60=12.5, 12.5*56=700
220+262.5+700=1182.5
Answer: 1.18km
Just looking for some reassuring, you are correct sir... or you are wrong and here is why