A woman is going to a friend’s house to discuss opening a business. At 11am she starts from rest and accelerates at a constant 2.5m/s2 for 9s to get to cruising speed. She drives for 15 minutes at this constant speed before she enters city traffic. She stops at her friend’s house which is straight lined from her 27km. She arrives at 12:15. Time interval is 11 to 12:15.
1. What is her initial velocity?
2. What is her final velocity?
3. What is her average velocity?