0
How can you tell if a train is going at a constant velocity or accelerating?
Wiki User
∙ 10y ago
If you are inside the train then you can use a device called an accelerometer.
If you are outside the train then you can time how long it takes the train to travel two successive distances, and use the SUVAT equations to determine it speed over each of the distances.
Wiki User
∙ 10y ago
Wiki User
∙ 14y agoThe velocity direction is changing due to the curved track, thus "change in velocity" is acceleration.
Add your answer:
Earn +20 pts
Would you know you're moving in a train if there was no friction and you could not see out of the train ie can't see objects going past?
If the train is moving at a constant velocity, and therefore in an intertial reference frame, then, no, you could not tell that you were moving.
If a train leaves a station at 0.0 marker traveling with a constant velocity of 36.0msWhat is the velocity a of the train in kmh?
To convert m/s into km/hr, you multiply by 18/5. So 36 m/s is 129.6 km/hr
If a train is slowing down is it accelerating?
This depends on how you define your axes. Let's assume they're defined as normal (being positive is accelerating, negative is breaking, and for velocity positive is driving forward, negative is driving in reverse). Then of course, you are speeding up. This simply means the train was in reverse, but it's accelerating in the positive direction now.
Why is a train that is traveling on a curved track at a constant speed accelerating?
We all grew up thinking "acceleration" means "speeding up". It doesn't."Acceleration" means the speed or the direction is changing.So if a moving object is speeding up, slowing down, or keeping a constant speedon a path that's curving or bending, then there's acceleration going on.
From a dead stop if a train begins accelerating at a constant 3 times gravity how long must the track be till the train reaches 1000 meters per second?
The train will reach 1000 m/s after 34.0 seconds, it will have travelled 17006.8 metres by that time.
What is the acceleration of any object moving at constant velocity?
0. Doesn't matter what unit it is. If it's moving at a constant velocity, not changing its speed (either positively or negatively), it's not accelerating, right? So its acceleration is 0. However, we must remember to always define; 'with respect to what'. Velocity is a relative concept. i.e. If you are sitting at rest or walking with constant velocity on a train, yet the train is accelerating, are you accelerating? wrt the train - the answer is no. wrt the embankment - the answer is yes. The answer then relates to something else, which is your own 'centre of mass' inertial rest frame. (i.e. you can 'feel' acceleration). So wrt your 'previous' state. This is normally quite poorly understood.
What is the net force on the different cars of a subway train that is traveling at constant velocity?
If anything is traveling at constant velocity, then the net force acting on it must be zero.+++Strictly, it is travelling at constant speed, not velocity, because you have not specified the directions of the train and the retarding forces acting on it.
Would you know you're moving in a train if there was no friction and you could not see out of the train ie can't see objects going past?
If the train is moving at a constant velocity, and therefore in an intertial reference frame, then, no, you could not tell that you were moving.
When two forces act on an object in opposite directions in a closed balloon the foresc are?
if a train is accelerating on a curved track at a constant speed is the train acceeratng
If a train leaves a station at 0.0 marker traveling with a constant velocity of 36.0msWhat is the velocity a of the train in kmh?
To convert m/s into km/hr, you multiply by 18/5. So 36 m/s is 129.6 km/hr
If a train is slowing down is it accelerating?
This depends on how you define your axes. Let's assume they're defined as normal (being positive is accelerating, negative is breaking, and for velocity positive is driving forward, negative is driving in reverse). Then of course, you are speeding up. This simply means the train was in reverse, but it's accelerating in the positive direction now.
Two trains leave a station at the same time train A travels at a constant of 16ms train B starts at 8.0 ms but accelerates constantly at 1o ms After 10.0 seconds which train has the greater speed?
Do your own homework! The train travelling at the constant speed will still be doing 16ms after 10 seconds The other train adds 1m per second so, after 10 seconds it will have added 10, 10 + 8 = 18ms. It is going faster. or : you can find the final velocity : final velocity = vi+a(t) = 8+1(10) =18 m/s So Train B is faster.
Why is a train that is traveling on a curved track at a constant speed accelerating?
We all grew up thinking "acceleration" means "speeding up". It doesn't."Acceleration" means the speed or the direction is changing.So if a moving object is speeding up, slowing down, or keeping a constant speedon a path that's curving or bending, then there's acceleration going on.
From a dead stop if a train begins accelerating at a constant 3 times gravity how long must the track be till the train reaches 1000 meters per second?
The train will reach 1000 m/s after 34.0 seconds, it will have travelled 17006.8 metres by that time.
Why person jumping out of a speeding train fall forward?
The velocity of the person is the velocity of the speeding train plus the velocity of the jump out. this gives a resultant velocity with a forward component in the direction of the train's motion.
Demonstrate in terms of force what the net force would be on the girl running on a train if she runs towards the front of the train and if she runs towards the back of the train?
If the train is going at a constant speed, it will make no difference whether she runs forward or backward. There will only be a difference if it is accelerating or slowing down. If it is accelerating you tend to be thrown backward, so it is easier to run back than forward. If it is braking you are thrown forward so it is easier to run forward than backward. The force on the body is the product of the acceleration or retardation and the mass of the body: F (Newtons) = mass (kg) x acceleration (meters/sec2)
Is there some way you can steer a train?
No, it is controlled by simply breaking and accelerating. They might derail (go off the track) only if they are going too fast on a turn
