Q: A train 108 m long moving at a speed of 50 kmph crosses a train 112 m long coming from the opposite?

Write your answer...

nahi aaata

Momentum is mass times velocity. Note that velocity and speed are not exactly the same thing. Velocity is a term used in physics to define both the speed and the direction of a moving object, so if two objects are moving at the same speed but in opposite directions, they have opposite momentum.

friction is nothing but just the opposite force acting on any moving object...... it hence decreases the speed of a moving object as the object is obstructed in its path

Positive acceleration = speeding up; speed increasing in the direction you're moving.Negative acceleration = slowing down; speed decreasing in the direction you're moving,or speed increasing in the opposite direction.

No. "Speed" is a scalar quantity, without sign or direction. But "velocity" can, if the object is moving opposite to the direction that you defined as the positive direction.

The traditional opposite is run, indicating a different speed.To not walk is to stand, stay, or wait.Another possible opposite is crawl, which is the earlier form of moving around.

No, the force of friction always acts in the direction opposite to that of the motions.

... its speed is the same in any direction, even if you're movingin that direction or in the direction opposite to it.

2 Forces are unbalanced when an object that is not moving starts moving or changes speed or direction. Balanced forces are the opposite they are where an object that is not moving stays still or an object that is moving stays at a constant pace.

Looking at the ground beside a moving vehicle ensures you see if they are coming into your lane or not.

The engine's force and frictional force are equal and opposite. Hence no net force and so no acceleration. That is why same speed

By accelerating it in the direction opposite to its motion, and then quickly removing the force when it's speed is zero.

Coming up behind a car at a faster speed and moving around said vehicle.

Velocity is Speed in a given direction. Moving at constant velocity is equivalent to say moving with a constant speed in a specified direction. So, moving at constant velocity implicitly means moving with constant speed.

oh yes, the radar guns are attached to the cars internal computers, so it compensates for the forward speed.

-- A moving object doesn't need any force to keep it moving.-- The speed, or direction, or both, of a moving object is changedby any force that's not cancelled by another equal opposite force.

Maybe, maybe not. Forces don't happen because you're moving ... forces are what cause you to move. If there are no forces acting on you, then you keep moving whichever way you're moving, and your speed or direction don't change. If there are forces acting on you, then your speed and/or direction can change. If the force is in the same direction that you're already moving, you'll move faster (accelerate). If the force is in the direction opposite to the direction you're moving, then your speed will decrease. Does any of this sound surprising ???

Speed is a scalar, velocity is a vector. Two objects moving at the same speed but in opposite directions will have opposite velocities. If the velocity of the elevator going up is v, the velocity of the elevator going down will be -v.

If they collide head on, the wreckage will remain at the point of impact (real world considerations aside).

Yes. If an object is moving at a constant speed the average speed and the constant speed are the same.

The speed of the object will increase.

The typical speed of a moving plate is about 21mm a year.

None, as "not moving at all" is just moving at a constant speed of zero. Special relativity shows that there is nothing unique or different about zero speed. It is just a value of constant speed.

The amount of low or high pressure in the area moving at a constant speed. also determined by where the wind is coming from(south,north).

If you are moving at the speed of light, then "how fast" has no meaning.