Q. A 1050 kg car carrying four 84kg people travels over a rough "washboard" dirt road with corrugations 4 m apart which causes the car to bounce on its spring suspension. The car bounces with maximum amplitude when its speed is 24 km/h. The car now stops, and four people get out. By how much does car body rise on its suspension owing to this decrease in weight?
Q. A speedy tortoise can run at 0.01 meters per second and a hare can run 21 times as fast. In a race they both start at the same time; however the hare stops to rest for 1.50 minutes. So the tortoise wins by a shell (20 cm).
How long is race? How long is the path?