Suppose a car is moving in a straight line and steadily increases its speed. it moves from 35 km/h to 40 km/h the first second and from 40 km/h to 45 km/h the next second. what is the car acceleration?

Aboat travels at 15 m/s in a direction 45° east of north. the boat then turns and travels at 18 m/s in a direction 5° north of east. what is the magnitude of the boat's resultant velocity? round your answer to the nearest whole number. /s what is the direction of the boat's resultant velocity? round your answer to the nearest whole degree. ° north of east