Answer: 0.0905475920892 miles
Explanation:
Convert km to Miles using conversion
1km = 0.6213712 miles
86 x 0.6213712 = 53.4379232 miles/hour
divide that by 60 to get miles per minute. Divide again to get miles per second
53.4379232 / 60 / 60 = 0.0148438675556 miles/second
6.1 x 0.0148438675556 = 0.0905475920892 miles