1.

a) 3600:1b) 60: 12. A car is moving along a horizontal curve of radius 20 m and the coefficient of frbetween the road and wheels of the car is 0.25. It's maximum safe sped isa) 3 m/sc) 7 m/sd) 9 m/sb) 5 m/sIduo to Farth is minimum at

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