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## What is the physics term used to describe how difficult it is to stop a moving object?

Inertia is the resistance of any physical object to any change in its velocity. This includes changes to the object’s speed, or direction of motion.

## What is the measure of how difficult it is to change the inertia of an object called?

The mass of an object is also a measure of its resistance to any change in its motion. This tendency of an object to continue in its current state (at rest or in uniform motion) is called inertia .

## How can the motion of an object that is not moving change?

When an object does not move in response to a push or a pull, it is because another equal-sized force, such as gravity or friction, is counteracting the push or pull. Gravity (the earth’s pulling force) and friction (the force between two surfaces) are common forces that work against motion.

## What determines the motion of an object?

An object is in motion when its distance from another object is changing. Whether an object is moving or not depends on your point of view. An object is in motion if it changes position relative to a reference point. You assume that the reference point is stationary, or not moving.

## How do you show velocity?

Velocity is speed with a direction. Saying Ariel the Dog runs at 9 km/h (kilometers per hour) is a speed. But saying he runs 9 km/h Westwards is a velocity….Speed and Velocity.

Speed Velocity
Has: magnitude magnitude and direction
Example: 60 km/h 60 km/h North
Example: 5 m/s 5 m/s upwards

## What is meant by speed and velocity?

Speed, being a scalar quantity, is the rate at which an object covers distance. The average speed is the distance (a scalar quantity) per time ratio. Velocity is the rate at which the position changes. The average velocity is the displacement or position change (a vector quantity) per time ratio.

2021-06-17