Tutors Answer Your Questions about Travel Word Problems (FREE)
Question 713947: A projectile is launched straight up from the ground level with an initial velocity of 96 ft per second. Its height in feet, "s", after "t" seconds is given by the equation: s=16t^2+96t
a) At what time(s) will it reach a height of 80 feet?
b) After how many seconds will it return to the ground?
I haven't shown any work because it is a challenge problem that they are having us get "help" with to prepare for a later chapter, to get us thinking. I have been searching through the book and can't find a word problem that deals with velocity. Please help or at least help me understand how to even begin to solve it. Thank you!
Click here to see answer by Alan3354(69443)  |
Question 713945: Quadratic Applications For Falling Bodies
An arrow is launched straight up in the air from the ground. It leaves the bow with an initial velocity of 80ft./sec
a. What is the maximum height it will reach?
b. When will it reach the maximum height?
c. when will it be 50 ft off the ground?
d. how high will it be after 2 seconds?
e. how long will it take for the arrow to come back down and hit the ground?
Click here to see answer by Alan3354(69443)  |
Question 714161: A group of college students eager to get to Florida on a spring break drove the 639 mi trip with only minimum stops. They computed their average speed for the trip to be 55.5 mi/h. How many hours did the trip take?
Click here to see answer by checkley79(3341) |
Question 714158: A salesperson purchased an automobile that was advertised as averaging 27mi/gal in the city and 38 mi/gal on the highway. A recent trip covered 2142 miles required 61 gallons of gasoline. Assuming that the advertised mileage estimates were correct, ho many miles were driven in the city?
Click here to see answer by josgarithmetic(39613) |
Question 714830: A private jet flies the same distance in 12 hours that a commercial jet flies in 9 hours. If the speed of the commercial jet was 198mph less than 2 times the speed of the private jet, find the speed of each jet.
Click here to see answer by lynnlo(4176) |
Question 714946: One car travels 45 miles per hour and another one travels 52 miles per hour. If they start in the same place at the same time, traveling in the same direction, after how many hours will the faster car be 42 miles ahead? If any tutor can answer this by 6:40 it will be really helpful because i am really confused. I appreciate any help i can receive!
Click here to see answer by ankor@dixie-net.com(22740)  |
Question 714828: A car uses gasoline at a rate of 7.0 L/ 100 km in the city and 5.0 L/ 100 km on the highway. When the car travelled 600 km, it used 35.0 L of fuel.
a) How far did the car travel on the highway?
b) How far did the car travel in the city?
c) How much fuel did the car use on the highway?
d) How much fuel did the car use in the city?
Click here to see answer by lynnlo(4176) |
Question 714953: two cars, traveling to the same vacation home 400 miles away, leave at the same time. One car makes only one stop and ends up averaging 30MPH more than the other car and arrives three hours earlier. How fast were the two cars going?
Click here to see answer by lynnlo(4176) |
Question 714924: suppose you are canoeing along a river with a steady current. your average speed upstream is 2.5 mi/h. on the return trip you paddle with the current, and your average speed is 4 mi/h. find the average speed of the current and your average speed if you were paddling in still water
Click here to see answer by mananth(16946)  |
Question 714868: it takes a plane traveling at a rate of 450 mph 25 minutes longer to travel a certain distance than it takes a second plane traveling at a rate of 500mph to travel the same distance. what is the distance.
all I realy need or want is help seeing the set up, after that im ok
Click here to see answer by mananth(16946)  |
Question 715178: Ivanna hiked up a mountain trail and camped overnight at the top. The next day she returned down the same trail. Her average rate traveling uphill was kilometers per hour and her average rate downhill was kilometers per hour. If she spent a total of hours hiking, how long was the trail?
Click here to see answer by Alan3354(69443)  |
Question 715110: 3. If a boat goes downstream 72 miles in 3 hours and upstream 60 miles in 6 hours, the rate of the river and the rate of the boat in still water respectively are ________?
a. 7 &16 mph b. 7&17 c. 6 &17 mph d. 6 &18 e. none
Click here to see answer by Alan3354(69443)  |
Question 715132: I need help with this word problem.
Two cars are in the same parking lot. The first car leaves the lot at 1:00pm and travels at an average speed of 40 mph down a highway. An hour later, at 2:00pm the second car leaves and travels at an average speed of 50 mph in the same direction on the same road. How many hours will the second car have to drive to catch up to the first car?
Click here to see answer by ankor@dixie-net.com(22740)  |
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