Q1. A 3000-kg blue truck travelling east collides and sticks to a 4000-kg orange truck travelling with a speed of 7.3 m/s to the west (define easterly direction to be the positive direction). Immediately after the trucks collide they move as one object with a velocity of -1.2 m/s. What was the blue truck's velocity before collision?

Q2. A kayaker needs to paddle north across a 200 wide harbor. The tide is going out, creating a tidal current that flows east at 2.0. The kayaker can paddle with a speed of 3.0. In which direction must he paddle in order to travel straight across the harbor.