Quick Answer: What Are The Three Things That Must Be Included In The Description Of Position?

Does changing direction always involve acceleration?

Yes, that’s right, a change in the direction of motion results in an acceleration even if the moving object neither sped up nor slowed down.

That’s because acceleration depends on the change in velocity and velocity is a vector quantity — one with both magnitude and direction..

What is the position?

: the place where someone or something is in relation to other people or things. : the place where someone or something should be. : the way someone stands, sits, or lies down.

How do you describe a position in physics?

Position is a place where someone or something is located or has been put. In physics, position is usually a number on an axis. You can have an x-axis that looks like the one in the section above or a y-axis, also in the section above.

What does it mean when an object has zero acceleration?

Zero acceleration means that the velocity is constant or is not changing. … So if the object is moving, it keeps going at the same speed and same direction until acceleration becomes non zero. If it as at rest, it stays at rest until a force is applied.

How do you describe motion in words?

You can describe the motion of an object by its position, speed, direction, and acceleration. An object is moving if its position relative to a fixed point is changing. Even things that appear to be at rest move.

What is the 4 types of motion?

Everything naturally wants to move and change. In the world of mechanics, there are four basic types of motion. These four are rotary, oscillating, linear and reciprocating.

What are the steps in describing position in two dimensions?

Give at least one example of direction in two dimensions. Describing position in two dimensions- * Cardinal direction- North,South,East,West. * If you use two directions, you are using two dimensions to describe position.

Can a body have constant speed and still be accelerating?

The velocity vector is constant in magnitude but changing in direction. Because the speed is constant for such a motion, many students have the misconception that there is no acceleration. … For this reason, it can be safely concluded that an object moving in a circle at constant speed is indeed accelerating.

What keeps an object moving in a circular path?

A centripetal force is a net force that acts on an object to keep it moving along a circular path.

What are 3 ways that an object can accelerate?

Answer and Explanation: There are three ways an object can accelerate: a change in velocity, a change in direction, or a change in both velocity and direction.

What words describe position?

A position word can include on top of, beside, above, under, behind, in, below, close to, far away, in front, in between. 2.

What are two ways an object can accelerate without speeding up?

The answer is the surface in contact or friction force. So the only way to accelerate a body is to change its velocity which is also a vector. Change its direction and thats the answer keeping the speed constant.

Can the speed of a person be negative?

The ratio of distance travelled and the time taken by a body can be zero but not negative. Since distance and time are positive quantities and speed is obtained by the ratio of these two quantities, speed cannot be negative.

What are the 7 types of motion?

There are different types of motion: translational, rotational, periodic, and non periodic motion.

Can you change your velocity without changing your speed?

Velocity is a vector quantity; that is, it has both magnitude and direction. However, speed is a scalar; it only has a magnitude. … And since velocity has both magnitude and direction, even if you change direction without changing the magnitude, you produce acceleration.

Does acceleration always mean speeding up?

The word acceleration is commonly used to mean “speeding up.” In physics, however, acceleration refers to any change in velocity. A driver slowing down to stop at a light is accelerating. A runner turning a corner at a constant speed is also accelerating because the direction of her velocity is changing as she turns.

What does it mean when an object is accelerating?

Acceleration is a vector quantity that is defined as the rate at which an object changes its velocity. An object is accelerating if it is changing its velocity.

What is the difference between positive and negative acceleration?

Mathematically, a negative acceleration means you will subtract from the current value of the velocity, and a positive acceleration means you will add to the current value of the velocity.

Why do you need a reference point to describe a location?

An object is in motion when its distance from another object is changing. … A reference point is a place or object used for comparison to determine if something is in motion. 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.

What is the process of changing positions?

Motion. is the process of changing position.

What is an example of a negative acceleration?

Some common examples are : →A car is moving with high velocity (say v1 = 100km/hr toward North) suddenly it’s driver notices a dog crossing the road, applies the brake and reduces the velocity of car to zero(v2 = 0) in 10 seconds (t2 – t1 = 10). So v2 -v1 is negative, implies negative acceleration.

What information do you need to describe an objects location?

What information do you need to describe an object’s location? The location of other objects around it so you can accurately describe (Examples: 2 meters from the drinking fountain, next to the pencil holder, etc.) Describe how your position changes as you jump over an object.

What can motion be described by?

Motion is mathematically described in terms of displacement, distance, velocity, acceleration, speed, and time. … One can also speak of motion of images, shapes and boundaries. So, the term motion, in general, signifies a continuous change in the positions or configuration of a physical system in space.

What information do you need to describe an object’s location quizlet?

To describe an object’s position, you must include three pieces of information: a reference point, a reference direction, and the distance from the reference point in the reference direction.

What is positive acceleration?

A positive acceleration means an increase in velocity with time. negative acceleration means the speed reduces with time. its a retardation. If the speed is increasing, the car has positive acceleration. When the car slows down, the speed decreases.