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Name ______________ Mixed Motion Problems List the variables. Look for key terms: starts, ends, rest, stop, or positive, negative directions, how long. 1. A car starts from rest, heads east, and attains a velocity of +20 m/s in 2 s. Calculate acceleration: 2. You arrive in my class 45 seconds after leaving math which is 90 meters away. How fast did you travel? 3. A car starts from rest and accelerates at 7 m/s2 for 12 seconds. What is its final velocity? 4. You need to get to class, 200 meters away, and you can only walk in the hallways at about 1.5 m/s. (if you run any faster, you’ll be caught for running). How much time will it take to get to your class? 5. A runner starts from rest and speeds up to 6 m/s in 3 seconds. What was his acceleration? 6. A bus traveled north 75 km for 30 minutes, stopped for 1.5 hours at a diner, then traveled 80 km south for 1.2 hours. Calculate the average speed. Name ______________ 7. How far can your little brother get if he can travel at 2.5 m/s and in 5 seconds you will discover that his squirt gun has run out of paint? How far can you get away from your little brother with the squirt gun filled with paint if you can travel at 3 m/s and you have 15s before he sees you? 8.