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Name ________________________________________________ Date _______ Physics CP Period ____________ Average Speed Practice Average Speed = Total Distance/Time interval EXAMPLE: You bicycle for 3 hours and traveled 18 km. speed? Information (what do you Set-up (what is the know) equation, and where do you enter your “known” information? Distance = 18 km Time = 3 h Speed = Distance/Time Average speed = ? Speed = 18 km/3 h What was your average Solution (you must include t). Speed = 6 km/h OR 1.67 m/s On a family vacation, you traveled 1200 km. Your total travel time was 30 hours. What was your average speed? Information (what do you Set-up (what is the Solution (you must know) equation, and where do include units). you enter your “known” information? 1. A rocket travels 4500 meters in 150 seconds. What is its average speed? Information (what do you Set-up (what is the Solution (you must know) equation, and where do include units). you enter your “known” information? 2. If a bullet travels 2500 m at 50 m/s, how long will it take to reach its target? Information (what do you Set-up (what is the Solution (you must know) equation, and where do include units). you enter your “known” information? 3. A spaceship to the moon covered the 216,000 km in 72 hours. What was the spaceship’s average speed? Information (what do you Set-up (what is the Solution (you must know) equation, and where do include units). you enter your “known” information? 4. 5. How long does it take a train moving 70 km/h to travel 350 km? Information (what do you know) Set-up (what is the equation, and where do you enter your “known” information? Solution (you must include units). Electrons travel through 1200 meters of cable in 3 s. What is their average speed? Information (what do you Set-up (what is the Solution (you must know) equation, and where do include units). you enter your “known” information? 6. A skier completes an 800 meter downhill course at an average speed of 20 m/s. What is her time? Information (what do you Set-up (what is the Solution (you must know) equation, and where do include units). you enter your “known” information? 7. The Queen Elizabeth II takes 5days (convert this to hours) to make a transatlantic crossing if 3840 miles. What is the ship’s average speed during this 5-day period? Information (what do you Set-up (what is the Solution (you must know) equation, and where do include units). you enter your “known” information? 8. 9. It is 60 miles around a lake. If you leave at 9 am and average 12 mph, at what time will be halfway around the lake? Information (what do you know) Set-up (what is the equation, and where do you enter your “known” information? Solution (you must include units).