A car waits at a ref light for a few seconds, and then accelerates straight ahead to 54km/h in 3.1s and then cruises at a constant speed for 75m. Find the total distance and time travelled
1b) a=v/t a=25/3.5=2.2 m/s^2 x=v^2/(2a)+x1 x=625/4.4+21.25=163.3 m
c) a=v/t a=25/3.5=2.2 m/s^2
2) a=v/t=15/3.1=4.8 m/s^2 x1=v^2/(2a) x1=225/9.6=23.4 m (while accelerating) x2=vt=15*4500=67,500 m total distance is x=x1+x2=23.4+67,500=67,523.4 m =67.523 km
