Motion Problems 2
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Transcript of Motion Problems 2
A man bikes from A toB at 20 km/h. He returnsby car at 60 km/h. The
bike trip is 2 hours longer than the car trip. How far is it from A to B?
R X T = DMethod
Bike
Car
20
60
x + 2
x
The distance is alwaysfilled in by multiplyingthe rate and time.
20(x + 2)
60x
Distancesare equal.
A man bikes from A toB at 20 km/h. He returnsby car at 60 km/h. The
bike trip is 2 hours longer than the car trip. How far is it from A to B?
R X T = DMethod
Bike
Car
20
60
x + 2
x
20(x + 2)
60x
What does x represent?What represents distance?
Vince bikes for 2 hoursat 18 km/h. Then he
rides by car for 3 hours.His total distance is 246 km. How fastdoes the car travel?
R X T = DMethod
Bike
Car
18
x
23
The distance is alwaysfilled in by multiplyingthe rate and time.
36
3x
246
Vince bikes for 2 hoursat 18 km/h. Then he
rides by car for 3 hours.His total distance is 246 km. How fastdoes the car travel?
Cindy bikes from A to B at 20 km/h. She returns by car at 80 km/h. The
bike trip is 3 hours longerthan the car trip. How far
is it from A to B?
R X T = DMethod
Bike
Car
20
80
x+3x
The distance is alwaysfilled in by multiplyingthe rate and time.
20(x+3)
80x
Distancesare equal.
Cindy bikes from A to B at 20 km/h. She returns by car at 80 km/h. The
bike trip is 3 hours longerthan the car trip. How far
is it from A to B?
Judy can bike 2 km/h faster than Linda. They travel in
opposite directions for 2 hours. They are then
68 km apart. How fast is each girl traveling?
R X T = DPerson
Judy
Linda
x+2
x
22
The distance is alwaysfilled in by multiplyingthe rate and time.
2(x+2)
2x68