Physics Review – Uniform Motion, Velocity, Speed 1. Look at the following position vs. time graph, and answer the following questions. (Assume Positive = East, Negative = West) a. What is the velocity from 0s-4s? b. What is the speed from 10s-12s? c. What is the speed and velocity from 4s – 6s? 2. If a cyclist is traveling East at 14 m/s, how long would it take the cyclist to travel 700 m? 3. A motorboat is traveling at 35 km/hr. How far would the motorboat travel in 10 minutes? (*HINT: think units. Are they consistent?) 4. A racecar travels 7 km in 4 seconds. What is the velocity of the racecar, in m/s? (*HINT: think units. Are they consistent?) Physics Questions – Velocity, Speed, and Unit Conversions Practice 1. Convert 35 km/h to m/s. 2. Convert 3 m/s to km/h. 3. A car’s displacement is 42 km [S] after driving for 0.75 hours. What is the car’s average velocity in km/h and m/s? 4. A car is traveling forward at 75 km/h. How far does the car travel in 25s? 5. A person paddles a canoe 1.2 km [W] in 0.20 hours. a. What is the average velocity of the canoe, in km/h? b. What is the average velocity of the canoe, in m/s? 6. What is the displacement of a car traveling 48 km/h [E] during a 5.0 s time interval? 7. How many seconds would it take a cyclist, traveling at 25 km/h, to travel 75 m forward? 8. A car is traveling at 75 km/h in the forward direction. How many metres forward would the car travel after 10 minutes? Physics Review – Uniform Motion, Velocity, Speed KEY 1. Look at the following position vs. time graph, and answer the following questions. (Assume Positive = East, Negative = West) d. What is the velocity from 0s-4s? 5 m/s [E] e. What is the speed from 10s-12s? ~ 10 m/s f. What is the speed and velocity from 4s – 6s? Zero 2. If a cyclist is traveling East at 14 m/s, how long would it take the cyclist to travel 700 m? T = 700m/ (14 m/s) = 50 seconds 3. A motorboat is traveling at 35 km/hr. How far would the motorboat travel in 10 minutes? (*HINT: think units. Are they consistent?) 10 minutes = 10/60 hours = ~ 0.17 hours 35(0.17) = 5.8 km 4. A racecar travels 7 km in 4 seconds. What is the velocity of the racecar, in m/s? (*HINT: think units. Are they consistent?) 7 km = 7000 m; 7000 m/4 s = 1,750 m/s Physics Questions – Velocity, Speed, and Unit Conversions Practice 9. Convert 35 km/h to m/s. 10. Convert 3 m/s to km/h. 11. A car’s displacement is 42 km [S] after driving for 0.75 hours. What is the car’s average velocity in km/h and m/s? 12. A car is traveling forward at 75 km/h. How far does the car travel in 25s? 13. A person paddles a canoe 1.2 km [W] in 0.20 hours. c. What is the average velocity of the canoe, in km/h? d. What is the average velocity of the canoe, in m/s? 14. What is the displacement of a car traveling 48 km/h [E] during a 5.0 s time interval? 15. How many seconds would it take a cyclist, traveling at 25 km/h, to travel 75 m forward? 16. A car is traveling at 75 km/h in the forward direction. How many metres forward would the car travel after 10 minutes?

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