0
Vector addition of velocities would be if something like you were on an escalator, which is going down, and you tried to run up the escalator.
So if the escalator is moving down at a rate of 5 ft/sec and you run up at 13 ft/sec (relative to the escalator) then the net velocity relative to the Earth is 8 ft/sec up. So you just subtract, because the two vectors are in the same line. OK so really the direction is at an angle (rather than 'up'). The larger velocity direction will determine the net direction.
If you were walking up the escalator at 3 ft/sec (relative to the escalator), then your net velocity is 2 ft/sec down.
Wiki User
∙ 9y ago
Wiki User
∙ 11y agoGenerally, if two vector quantities are in opposite directions, and they are the kind
of quantities that can be combined into one, like force, or even displacement, then
the resultant is the difference between their magnitudes and in the direction of
the one with the greater magnitude.
But if two separate things are moving in opposite directions, then I daresay you're
not going to combine their velocities, and there's not going to be any resultant.
Oh. Wait. I just thought of an example where you might pull it off. It's the case
where a passenger on an eastbound train is feeling dry and hustling westward
toward the lounge car at the train's trailing end. His velocity ... as observed and
measured by a Physicist sitting beside the track, is determined as I described in
the first paragraph.
Wiki User
∙ 9y agoSo if the escalator is moving down at a rate of 5 ft/sec and you run up at 13 ft/sec (relative to the escalator) then the net velocity relative to the Earth is 8 ft/sec up. So you just subtract, because the two vectors are in the same line. OK so really the direction is at an angle (rather than 'up'). The larger velocity direction will determine the net direction.
If you were walking up the escalator at 3 ft/sec (relative to the escalator), then your net velocity is 2 ft/sec down.
Wiki User
∙ 13y agoDisplacement/time
* * * * *
Velocity is a vector so the direction of displacement needs to be specified.
Wiki User
∙ 10y agoWiki User
∙ 13y agoby head to tail rule..if they are equal in magnitude then their resultant is a null vector..
Wiki User
∙ 13y agoIf, by opposite direction, you mean that they are anti-parallel, you simply subtract the magnitudes of the two forces and take the absolute value of the remainder.
Wiki User
∙ 14y agoIf they are in the same direction, just add the magnitudes.
Add your answer:
Earn +20 pts
How do you find resultant velocity?
When you combine 2 velocities that are in the same directions, add them together to find the resultant velocity. When you combine 2 velocities that are in opposite directions, subtract the smaller velocity from the larger velocity to find the resultant velocity.
What do magnitudes do when you combine two displacements that are in opposite directions?
subtract
If two gliders of equal mass and equal and opposite initial velocity collide perfectly elastically what are the final velocities of the gliders in terms of the initial velocities?
Both the gliders will be travelling at exactly the same speed as the initial velocity but in opposite directions.
Two or more velocities can be combined by?
Velocity is a vector quantity(it has a direction). Simply use the vector adding method to combine velocities.
How do you combine velocities in the same direction and different direction?
By vector addition
How do you find the resulting velocity?
When you combine 2 velocities that are in the same directions, add them together to find the resultant velocity. When you combine 2 velocities that are in opposite directions, subtract the smaller velocity from the larger velocity to find the resultant velocity.
How do you find resultant velocity?
When you combine 2 velocities that are in the same directions, add them together to find the resultant velocity. When you combine 2 velocities that are in opposite directions, subtract the smaller velocity from the larger velocity to find the resultant velocity.
What is the example of a condition when the resultant of two velocities is zero?
Only if the two velocities are equal in magnitude but in opposite directions.
What do magnitudes do when you combine two displacements that are in opposite directions?
subtract
If two gliders of equal mass and equal and opposite initial velocity collide perfectly elastically what are the final velocities of the gliders in terms of the initial velocities?
Both the gliders will be travelling at exactly the same speed as the initial velocity but in opposite directions.
Two trains moving in opposite directions with some velocities 500 and 700 kmhr The distance is 2400km then find the time taken for them to meet?
Never.
What do you do when many velocities are acting on an object in the same direction and in opposite directions?
It all goes in one place. it as 25 m/s DF FBGM<3
What is the resultant velocity if the kph for west is 1400 and the velocity for east is 20 kph?
Because the two velocities are in the opposite directions, you can directly subtract their numeric values. (1400 - 20) kph in the larger velocities direction. The answer is 1380 kph West.
Two or more velocities can be combined by?
Velocity is a vector quantity(it has a direction). Simply use the vector adding method to combine velocities.
How do you combine velocities in the same direction and different direction?
By vector addition
If a car is traveling north at 100 kilometers per hour and another car is traveling in the opposite direction at the same speed Are their velocities the same?
No. Velocity includes a directional component. If the two were of the same mass and collided head-on, their velocities (being in the reverse directions) would cancel out.
If an object has two velocities are going in opposite directions would the overall velocity of the object be positive or negative?
It's positive in the direction of the greater one, and negative in the direction of the smaller one.
