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Since the direction of motion is not given, nor implied by speed, the acceleration can have any value between 0.146 ms-2 and 0.0625 ms-2.
7.5
The frame of reference with regard to postion, speed and acceleration is just your perspective in measuring speed, position, or acceleration. Say you are watching a horse and a train moving alongside each other in the same direction. If you are standing on still ground, you observe the horse and the train moving at a certain speed relative to you. Let's assume this speed is three meters per second. Now suppose you are on the train looking at the horse, which is still moving at the same speed in the same direction. You will see the horse moving at zero meters per second relative to you, because both you and the horse are moving at the same speed. Even though you are both moving, the horse will still move along side you as if you and the horse are standing perfectly still. The frame of reference with regard to postion, speed and acceleration is just your perspective in measuring speed, position, or acceleration. Say you are watching a horse and a train moving alongside each other in the same direction. If you are standing on still ground, you observe the horse and the train moving at a certain speed relative to you. Let's assume this speed is three meters per second. Now suppose you are on the train looking at the horse, which is still moving at the same speed in the same direction. You will see the horse moving at zero meters per second relative to you, because both you and the horse are moving at the same speed. Even though you are both moving, the horse will still move along side you as if you and the horse are standing perfectly still.
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.
Three ways an object can accelerate is speeding up,slowing down, and changing direction.
Since the direction of motion is not given, nor implied by speed, the acceleration can have any value between 0.146 ms-2 and 0.0625 ms-2.
Unless the train is in a curve, you cannot have constant speed and constant acceleration. You either have constant speed and zero acceleration, or you have changing speed and constant acceleration. Please restate the question.
The speed or velocity of a train has no bearing on its acceleration.
Acceleration = (change in speed) / (time for the change)= (10 - 25) / 240 = -15/240 = -0.0625 meter/sec2The acceleration is negative, which is a description of slowing down.
You have to know how long it takes to get to 90 mph to solve this. Speed = acceleration x time
Depends on speed, stops, acceleration, and loading times
7.5
Average acceleration = change in speed/time = 2.4/0.8 = 3 ms-2
acceleration = change in speed /time = (10-25)/240=15/240 = -1/16 The train is slowing down (decelerating) at a rate of 1/16 mile per second per second Added: Hate wasting work! Same answer in decimal. Acceleration ( looks like slow down here ) = change in velocity/change in time 10 mi/s = 25 mi/s/240 s - 0 = - 0. 0625 mi/s2 ======================long time braking
The frame of reference with regard to postion, speed and acceleration is just your perspective in measuring speed, position, or acceleration. Say you are watching a horse and a train moving alongside each other in the same direction. If you are standing on still ground, you observe the horse and the train moving at a certain speed relative to you. Let's assume this speed is three meters per second. Now suppose you are on the train looking at the horse, which is still moving at the same speed in the same direction. You will see the horse moving at zero meters per second relative to you, because both you and the horse are moving at the same speed. Even though you are both moving, the horse will still move along side you as if you and the horse are standing perfectly still. The frame of reference with regard to postion, speed and acceleration is just your perspective in measuring speed, position, or acceleration. Say you are watching a horse and a train moving alongside each other in the same direction. If you are standing on still ground, you observe the horse and the train moving at a certain speed relative to you. Let's assume this speed is three meters per second. Now suppose you are on the train looking at the horse, which is still moving at the same speed in the same direction. You will see the horse moving at zero meters per second relative to you, because both you and the horse are moving at the same speed. Even though you are both moving, the horse will still move along side you as if you and the horse are standing perfectly still.
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.
Three ways an object can accelerate is speeding up,slowing down, and changing direction.