# When a block is moving with a constant velocity?

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## When a block is moving with a constant velocity?

A block moving to the left with a constant velocity means that. the net force applied to the block is zero . This is stipulated in Newton’s first law of motion or law of inertia.

## What is the rate of change of the speed of the center of mass of the two-block system after the block of mass m2 enters the frictional surface?

Since the block of mass m2 slides with a constant speed after entering the frictional surface, its initial velocity is equal to its final velocity. Therefore, the change in momentum of block m2 is also 0. As a result, the rate of change of the speed of the center of mass of the two-block system is 0.

## What is the approximate acceleration of the center of mass of the two object system at the moment right before the first object reaches the ground?

The acceleration of the center of mass of the two-object system right before the first object reaches the ground is approximately 9.81 m/s^2, which is the acceleration due to gravity on Earth.

## Which of the following is the best method to determine the distance h from the graph?

Expert-Verified Answer The best method to determine the distance h from the graph for a toy dart launched at a target held up by a light string will be to find twice the area under the curve for the dart’s data, option B.

## When an object is moving at constant speed velocity?

To have a constant velocity, an object must have a constant speed in a constant direction. Constant direction constrains the object to motion to a straight path. Newton’s second law (F=ma) suggests that when a force is applied to an object, the object would experience acceleration.

## When an object is moving with constant speed?

What does constant speed mean? An object moving at a constant speed is characterized by a uniform increase or decrease in the distance it covers per given time interval. It means that the object’s speed at the start of its motion (initial speed) is the same as its speed at the end of its motion (terminal speed).

## What is the formula for the rate of change in speed?

The formula for the rate of change of speed, also known as acceleration, is:a = (v_f – v_i) / twhere: a is the acceler.

## What is the formula for the speed of the center of mass?

The center of mass velocity equation is the sum of each particle’s momentum (mass times velocity) divided by the total mass of the system. Where: m represents mass in kilograms (kg) v represents velocity in meters per second (m/s)

## Why is the velocity of the center of mass the same before and after collision?

Since, there is no external force acting on the system, the velocity of center of mass remains same before and after the collision.

## What is the difference between mass and velocity?

Amount of matter contained in a substance is called its mass. Velocity is the rate of change of displacement i.e, the distance travelled by an object in a unit time in a definite direction. The S.I unit of mass is kilogram or kg . The S.I unit of velocity is m / s .

## Is velocity positive or negative?

Velocity includes both speed and direction, thus velocity can be either positive or negative while speed can only be positive. Another way to say this is that speed is the absolute value of velocity.

## What is the formula for mass in physics?

The different varieties of ways to determination of the mass of an object are there: (m= ρ/V) Mass = Density/Volume.

## What happens when a charge moves with constant velocity?

Therefore, the charge moving with a uniform velocity produces the magnetic field.

## When an object is moving with constant velocity in a straight line?

Newton’s Laws of Motion: The First Law of motion states that if the net force on an object is zero the object will be moving with constant velocity or stay at rest. If the net force is different from zero the object will be moving with acceleration. This is the statement of the Second Newton’s Law.

## How can a block move with a constant velocity even though there is an applied force?

When 3.0 N force is applied on the block, the frictional force of an equal magnitude starts acting in the opposite direction. Hence, the net force acting on the block becomes zero. The block moves with a constant velocity that it gains just before the friction force came into the existence.