What is the resulting acceleration (in m/s2) when an unbalanced force of 48 N is applied to a 8 kg object? How far away (in m) was a lightning strike if thunder is heard 9.93 seconds after seeing the flash? Assume that sound traveled at 350.0 m/s during the storm. A car is driven at an average speed of 106 km/h for two hours, then at an average speed of 52 km/h for the next hour. What was the average speed (in km/h) for the three-hour trip? What is the acceleration (in m/s2) of a car that moves from rest to 16 m/s in 9 s