(kinematics) need asap. give me a step by step explanation
1. an automobile moves at a constant velocity of 15.0 m/s east for 4.50 minutes. how far does the automobile travel?
2. a dog runs at an average velocity of 1.40 m/s south for 89.0 sec, and then walks at an average velocity of 0.45 m/s in the same direction for
98.0 sec. what is the average
velocity of the dog during its total time of travel?
3. bus a travels at a constant velocity of 2.00 m/s east and bus b travels in the same
direction at a constant velocity of 3.00 m/s. if bus b starts 1.00 minute after bus a, how long (time) will it take bus b to catch bus a.