Distance, Speed & Time( Week 12 Evaluation) 1. Eric took a 22.5-mile biking trip in 1.5 hours. What was his average speed in feet per minute? Note that 1 mile = 5280 feet. 2. Kevin rode his bike to a baseball practice at 15 mph. On his way home, he only pedaled at 10 mph. What was his average speed (in mph) for the entire trip? 3. A police officer is chasing a speeding driver who is driving at 85 MPH. The officer is 1.5 miles behind the speeding car and he travels at 89 MPH. How many minutes will it take for the officer to catch up the speeding car? 4. Helen and her father rode a tandem bicycle in a trail. In the first half of the distance, she pedaled, her dad rest, and the tandem bicycle traveled at 8 MPH. In the second half of the distance, she rest, her dad pedaled, and the tandem bicycle traveled at 12 MPH. How much was the average speed (in MPH) for the entire distance? 5. Helen and Emily compete in a 7.5-mile bicycle trail. Helen bikes at 12.5 MPH, and Emily bikes at 11.5 MPH. How far (in miles) is Emily behind Helen when Helen reaches the finish line? 6. Nick runs 4 meters every second. Nancy runs 3.5 meters every second. Nick let Nancy start a race 25 meters ahead of him, and reached the finish line 9 seconds before Nancy did. How many meters did Nick run in the race? 7. Two cars started from the same place at the same time, but they headed in opposite directions. The faster car traveled 10 miles per hour faster than the slower car. At the end of 3 hours, they were 270 miles apart. How many miles had the faster car traveled by the end of 3 hours? 8. In an one-mile running race, Jennifer was able to run at 7 MPH for the 1st half, but was only able to run at 3 MPH for the remaining half. What was her average speed (in MPH) for the entire race? |