phys. 1401, Homework 4. 1 . . As you walk to class with a constant speed of 1.60 m/s, you are moving in a direction that is 15.0 north of east. How long does it take you to move (a) 20.0 m east or (b) 30.0 m north? 2. .. Two canoeists start paddling at the same time and head to- ward a small island in a lake, as shown in Figure 1 . Canoeist 1 paddles with a speed of 1.35 m/s at an angle of 45 north of east. Canoeist 2 starts on the opposite shore of the lake, a dis- tance of 1.5 km due east of canoeist 1. (a) In what direction rel- ative to north must canoeist 2 paddle to reach the island? (b) What speed must canoeist 2 have if the two canoes are to arrive at the island at the same time? Figure I N W- E S 1.0 km 450 1.5 km . An astronaut on the planet Zircon tosses a rock horizontally with a speed of 6.95 m/s. The rock falls through a vertical dis- tance of 1.40 m and lands a horizontal distance of 8.75 m from the astronaut. What is the acceleration of gravity on Zircon