11. How much time will it take a car travelling at 88 km/hr (55 mi/hr) to travel 500km?

·        11. How much time will it take a car travelling at 88 km/hr (55 mi/hr) to travel 500km? 

·         During a race, a runner runs at a speed of 6 m/s. 2 seconds later, she is running at a speed of 10 m/s. What is the runner's acceleration?