Distance Problems (2)( Week 48 Evaluation) 1. The length of a train is 140 meters. It is driven at the speed of 20 meters per second. How many seconds will it take for the train to pass a 160-meter long tunnel (from entering to completely exiting from the tunnel)? 2. Jennifer starts out at the starting point of a trail at 4 meters per second, and 5 seconds later Michael starts out at the same point at the speed of 5 meters per second. In how many seconds will Michael catch up with Jennifer? 3. Larry and Emily start together and race their bikes around a circular trial at constant speeds. It will take Larry 8 minutes to go 1 lap, and it will take Emily 6 minutes for a lap. How long will it take Emily to be exactly 1 lap ahead of Larry (in minutes)? 4. The length of a bridge is 1700 meters. A train crossed the bridge at 500 meters per minute. It took the train 3.8 minutes to cross the bridge (from entering to completely exiting the bridge). What is the length of the train in meters? 5. Julia was riding her bike to school at 7 MPH. Exactly half way, she got a flat tire on her bike and had to walk to the school for the remaining distance. If she was able to walk at 3 MPH, what was her average speed (in MPH) for the entire trip from home to school? 6. John and George are biking around a round trail which is 8 miles long. John bikes at 11 mph and George bikes at 9 mph. If both start from the same place and ride in the same direction, how long (in hours) will it take for them to meet again? 7. Jennifer and Hillary are biking around a round trail which is 6 miles long. Jennifer bikes at 8 mph and Hillary bikes at 8 mph. If both start from the same place but ride to different directions, how many minutes will it take for them to meet again? 8. A train traveling at 20 miles per hour reaches a tunnel which is 9 times as long as the train. If the train takes minutes to completely clear the tunnel, how long is the train in miles? Express your answer as a fraction in lowest terms. 9. If Helen can bike 72 feet in 9 seconds, how many minutes will it take her to bike 800 yards? 10. Kevin drove his car at 42 mph for the same number of hours as that David drove his car at 35 mph. If Kevin ended up driving 35 miles more than David, how many hours did they drive? |