# Is the elevator speeding up slowing down or moving at constant speed?

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## Is the elevator speeding up slowing down or moving at constant speed?

While moving down in an elevator, there are also two times that we do not move at a constant velocity– speeding up while moving down, and slowing down while moving down approaching the lower floor. Pro Tip: Remember that if the elevator is slowing down, the acceleration vector points opposite the velocity vector.

## Which of the following describes a velocity as opposed to a speed?

Speed is the time rate at which an object is moving along a path, while velocity is the rate and direction of an object’s movement.

## What is the acceleration that an object experiences?

The acceleration that an object experiences is. Proportional to the net force, inversely proportional to the mass.

## When an elevator is moving at a constant speed does your weight change?

From the above explanation and given condition when person in an elevator is moving at constant speed in such case the net acceleration will be zero. Thus we can say that person’s weight when he is in a moving elevator will not change because the apparent weight of the person will be equal to its true weight.

## Is a downward moving elevator slowing down?

A downward moving elevator (held by a cable) slows down. The cable supplies the tension force. Since the elevator is moving downwards and slowing down, there must be more upwards force than the downwards gravity force.

## What are the 3 formulas for velocity?

- v = u + at.
- v² = u² + 2as.
- s = ut + ½at²

## What changes velocity but not speed?

So the velocity can be changed either by changing the speed or by changing the direction of motion (or both). Therefore, it may be possible that the speed is constant, but the velocity is changing because the direction is changing.

## What happens when speed and velocity are not equal?

People may think that average speed and average velocity are just different names for the same quantity, but average speed depends on distance and average velocity depends on displacement. If an object changes direction in its journey, then the average speed will be greater than the magnitude of the average velocity.

## How does inertia explain why it is difficult to stop a moving skateboard?

Once an object starts moving, inertia keeps it moving without any additional force being applied. In fact, it won’t stop moving unless another unbalanced force opposes its motion. For example, Lauren can stop the rolling skateboard by moving to the other end and pushing in the opposite direction.

## How is normal force balanced?

One force – the Earth’s gravitational pull – exerts a downward force. The other force – the push of the table on the book (sometimes referred to as a normal force) – pushes upward on the book. Since these two forces are of equal magnitude and in opposite directions, they balance each other.

## Which object has greatest inertia?

Answer and Explanation: Since inertia depends only on the mass, the object with the most mass has the most inertia.

## What happens to your weight when the elevator starts to accelerate down?

The normal force is equal to your apparent weight. So, you actually feel a little heavier than usual when the elevator accelerates upward, and lighter than usual when the acceleration is down.

## Is acceleration constant in an elevator?

This means that speed must be constant, and therefore acceleration must be 0 m/s². However, non-inertial frame do not have a uniform speed: this is where it differs from inertial frames. Non-inertial frames have an acceleration that is usually constant, but not equal to 0 m/s².

## What happens to your weight when the elevator starts to accelerate upwards?

This is an application of Newton’s second law to the forces felt in an elevator. If you are accelerating upward you feel heavier, and if you are accelerating downward you feel lighter. If the elevator cable broke, you would feel weightless since both you and the elevator would be accelerating downward at the same rate.

## Is the speed of an elevator constant?

The upward cable force is constant and equal to the gravity force. The kinetic energy of the elevator is constant because the speed of the elevator is constant. The acceleration of the elevator is zero because the speed does not change in time.

## Is an elevator being lifted up an elevator shaft at a constant speed?

Answer and Explanation: Since the elevator is going up at a constant speed, the acceleration of the elevator, which is defined as the rate of change of velocity, is zero. As the net force is zero, the upward force by the cable must be equal to the downward force of gravity.

## What type of motion is an elevator going up?

Answer: 1. An elevator going up – Uniform Linear Motion. As the elevator moves with constant speed either upward or downward, in a straight line, the kind of motion it shows is Uniform Linear Motion.

## Is an elevator slowing down acceleration?

On the way down, the elevator must slow from the constant negative velocity to a stop. The elevator’s acceleration is upward/positive, because it must be opposite the direction of motion to slow it to rest.