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8. A car is moving at a constant speed of 40 km/h along astraight road which heads towards a large vertical walland makes a sharp 90 turn by the side of the wall. Afly flying at a constant speed of 100 km/h, starts fromthe wall towards the car at an instant when the car is20 km away, flies until it reaches the glasspane of thecar and returns to the wall at the same speed. It continuesto fly between the car and the wall till the car makes the90° turn. (a) What is the total distance the fly hastravelled during this period? (b) How many trips has itmade between the car and the wall?

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