1. A car is coasting backwards downhill at a speed of 3.0 m/s when the driver gets the engine started. After 2.5 s, the car is moving uphill at 4.5 m/s. Assuming that uphill is positive direction, what is the car’s average acceleration?
2 answers
acceleration=(4.5-(-3.0))/2.5
4.5-3/2.5=.6
2 answers