The girl is riding her bicycle. When she gets to the corner, she stops to get the drink. At that time, friend passes by her, traveling at the constant speed of 7.7 m/s. a) After 10 s, girl gets back on bike and travels with the steady acceleration of 2.4 m/s^2. How long does it take her to catch with friend? b) If girl had been on bike and rolling along at the speed of 1.4 m/s when her friend passed, what steady acceleration would she require to catch up with her friend in same amount of time?