Assignment 1 Problems(Fall Term Physics 102) 2. The radius r of a circle inscribed in any triangle whose sides are a , b , and c is given by r = [( s - a )( s - b ) ( s - c )/ s ] 1/2 , where s is an abbreviation for ( a + b + c )/2. Check this formula for dimensional consistency. 36. A certain corner of a room is selected as the origin of a rectangular coordinate system. If a fly is crawling on an adjacent wall at a point having coordinates (2.0, 1.0), where the units are meters, what is the distance of the fly from the corner of the room? R=2.24 m, θ =26.6 o 12. A tortoise can run with a speed of 0.10 m/s, and a hare can run 20 times as fast. In a race, they both start at the same time, but the hare stops to rest for 2.0 minutes. The tortoise wins by a shell (20 cm). (a) How long does the race take? (b) What is the length of the race? T= 126 s, D=12.6 m 37. A car starts from rest and travels for 5.0 s with a uniform acceleration of + 1.5 m/s 2 . The driver then
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