Each week you will have a question that you must answer.
The questions are worth 10 points each. The first person to correctly answer the question each week will get 5 bonus points.
YOU MUST USE AT LEAST THREE SENTENCES TO EXPLAIN YOUR ANSWERS.
Tuesday, January 28, 2014
Week 7 Reflection
A train leaves Chicago traveling to LA and is traveling at 40 mph. 2 hours later another train leaves heading in the same direction. The second train is traveling at 60 mph. How long until the second train passes the first train?
The answer would be 1 hour. I got that because the first train is already at 80 miles.So in one more hour the first train would be at 120 miles.The second train is 60 miles.So in one more hour it would also be at 120 miles. 80+40=120 60+60=120
I agree with janae because the first train was goin 80 miles so one more hour would be 120 miloes the scond train is 60 miles so one mopre hour would be 120 , 80+40+=120 60+60=120
I agree with everyone because the first train left and was moving at the speed of 40 mph. Then 2 hours later it's already at 80 miles and the second train left with the speed of 60 mph. So in one more hour both trains would travel 120 miles. So the answer is 1 hour.
I agree with all of them 1 hour is the answer because..... the 1st train is 8miles so in one hour the first train would be 120. the second train is 60miles so one hour it would be 120. 60+60=120, 80+40=120
I agree with everyone I got that because the first train is at 80 miles.So in one more hour the first train would be at 120 miles.The second train is 60 miles.So in one more hour it would also be at 120 miles. 80+40=120 60+60=120
I think I agree. Within the first hour, the first train starts out at 40mile, so it would be at 80 miles when the second train is headed out. . Within the next 60 minuets, the first train would be at 120 miles, and so would the second train. This is an hours difference.
The first train will be traveling at 40mph within the first hour. So in the second hour the train will be going at 80mph. When the other train leaves it will go at 60mph during the first hour. Then in the second hour it will be traveling 120mph. After a hour both train will be traveling at the same speed so the difference is 1 hour.
I disagree with everyone who said that the answer is 1 hour. I disagree with them because since the first train is 2 hours ahead of the 2nd train, and it is traveling at a speed of 40 miles per hour, the train would have reached 80 miles in 2 hours when the 2nd train is starting to leave. Since the 2nd train is moving at 60mph, in one hour, it would have only reached 60 miles. Meaning that 1 hour isn't enough for the 2nd train to pass the 1st train. I think the answer is 4 hours until the 2nd train passes the first train. Since the 1st train is ahead by 2 hours, in the 4 hours that it will take the 2nd train to pass the first train, the first train would have been going in the direction it is going for a total of 6 hours, while the 2nd train have only been going in the direction for 4 hours. First train: 6=hours 40=mph 6 x 40 = 240 miles. Second train: 4= hours 60=mph 4 x 60 = 240 miles. So I think the answer is 4 hours, not 1 hour
I change my answer to 5 hours. In 4 hours, both of the train would be about next to each other. So in about 5 hours, the 2nd train would be ahead the 1st train.
I disagree with everyone. It's true that in about 5 hours, the 2nd train would've passed that 1st train by far. But the question says "how long until..." The 1st train is two hours ahead so it would already have been at 80 miles. The 2nd train would catch up to the 1st train by 1 hour because 60+60=120, thus making the 80 to 120. The question says, "How long until the second train passes the first train?" The answer is not 1 hour because they would've been equal, not one passing the other. So the answer would be 3 hours. The first train would be at 160 and the second train at 180.
The answer would be 1 hour.
ReplyDeleteI got that because the first train is already at 80 miles.So in one more hour the first train would be at 120 miles.The second train is 60 miles.So in one more hour it would also be at 120 miles. 80+40=120 60+60=120
60=60=120
Delete40=40=80
80=40=120
so it would take one hour
I agree with janae because the first train was goin 80 miles so one more hour would be 120 miloes the scond train is 60 miles so one mopre hour would be 120 , 80+40+=120 60+60=120
DeleteI agree with everyone because the first train left and was moving at the speed of 40 mph. Then 2 hours later it's already at 80 miles and the second
Deletetrain left with the speed of 60 mph. So in one more hour both trains would travel 120 miles. So the answer is 1 hour.
I agree with all of them 1 hour is the answer because.....
Deletethe 1st train is 8miles so in one hour the first train would be 120.
the second train is 60miles so one hour it would be 120.
60+60=120, 80+40=120
I agree with everyone I got that because the first train is at 80 miles.So in one more hour the first train would be at 120 miles.The second train is 60 miles.So in one more hour it would also be at 120 miles. 80+40=120 60+60=120
ReplyDeleteI think I agree. Within the first hour, the first train starts out at 40mile, so it would be at 80 miles when the second train is headed out. . Within the next 60 minuets, the first train would be at 120 miles, and so would the second train. This is an hours difference.
ReplyDeleteThe first train will be traveling at 40mph within the first hour. So in the second hour the train will be going at 80mph. When the other train leaves it will go at 60mph during the first hour. Then in the second hour it will be traveling 120mph. After a hour both train will be traveling at the same speed so the difference is 1 hour.
ReplyDeleteI disagree with everyone who said that the answer is 1 hour. I disagree with them because since the first train is 2 hours ahead of the 2nd train, and it is traveling at a speed of 40 miles per hour, the train would have reached 80 miles in 2 hours when the 2nd train is starting to leave. Since the 2nd train is moving at 60mph, in one hour, it would have only reached 60 miles. Meaning that 1 hour isn't enough for the 2nd train to pass the 1st train. I think the answer is 4 hours until the 2nd train passes the first train. Since the 1st train is ahead by 2 hours, in the 4 hours that it will take the 2nd train to pass the first train, the first train would have been going in the direction it is going for a total of 6 hours, while the 2nd train have only been going in the direction for 4 hours. First train: 6=hours 40=mph
ReplyDelete6 x 40 = 240 miles. Second train: 4= hours 60=mph 4 x 60 = 240 miles.
So I think the answer is 4 hours, not 1 hour
I change my answer to 5 hours. In 4 hours, both of the train would be about next to each other. So in about 5 hours, the 2nd train would be ahead the 1st train.
DeleteI disagree with everyone. It's true that in about 5 hours, the 2nd train would've passed that 1st train by far. But the question says "how long until..." The 1st train is two hours ahead so it would already have been at 80 miles. The 2nd train would catch up to the 1st train by 1 hour because 60+60=120, thus making the 80 to 120. The question says, "How long until the second train passes the first train?" The answer is not 1 hour because they would've been equal, not one passing the other. So the answer would be 3 hours. The first train would be at 160 and the second train at 180.
Delete