Speed and Velocity PlUUI 1. A student practicing for a track meet ran 250 meters

Question

Speed and Velocity PlUUI 1. A student practicing for a track meet ran 250 meters in 30 seconds 2s0m a. What was her average speed b If on the following day she ran 300 meters in 30 seconds, by how much did her speed increase? 200 2. A car traveled 1025 kilometers from El Paso to Dallas in 13.5 hours. What was it's average ve 0a5k 5.5 3. How fast was a plane flying if it traveled 400 kilometers in 30 minutes? 4. A student walks 10 blocks to a computer store. (assume all the blocks are equal length.) a. How long will it take him to reach the computer store if he walks 3 blocks in 2 minutes? b. What is his average velocity? 5. If the average speed of a car is 45km/hr, how far can it travel in 40 minutes? 6. The speed of light is 3 X 108 m/sec. How long does it take light to travel the 149 X 109 m d sun to the earth? 7. A jogger runs the first 1000 meters of a race in 250 seconds. What is the joggers speed? 8. The space shuttle travels in orbit at 21,000 km/hr. How far will it travel after 5 hours? 05,D00 m Use the table to answer questions 9 and 10

Explanation / Answer

1.

(a) Speed, V = Distance / time = 250 m / 30s = 25/3 m/s

(b) V1 = 300m/30s = 10 m/s

change = 10 -25/3 = 5/3 m/s

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