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When does the velocity of an object change?
The velocity of an object changes when there is a change in its speed, direction, or both. This can occur due to external forces acting on the object, such as acceleration or deceleration, causing the velocity to increase or decrease.
How can the velocity of an object change if the speed doesn't?
Easy answer: velocity is defined as speed in a specific direction. So, if a car is traveling at a velocity of due west, 60 miles per hour, then turns onto a road going north, the velocity has changed to due north, 60 miles per hour. But the speed has stayed the same.
Is the magnitude of speed always the same as the magnitude of velocity... yes or no can you please also explain your answer using relevant principles of physics?
Yes, the magnitude of speed is the same as the magnitude of velocity. Velocity V= s(R/r)= sR' where s is the speed and R'=(R/r) is the unit vector in the direction R, where R is a position vector and r is the magnitude of R. So "s' is the magnitude (scalar) of the velocity. In Physics, a rotating object can have constant speed and changing direction. A car can have the same speed on the speedometer and experience a force as it turns at the this constant speed. The turning creates a force as there is acceleration caused by the change in velocity, in this case the change in direction, not the change in speed..
Can the velocity of a car which is turning a curve be held constant?
The speed can be constant but the velocity can't, because the directionof motion ... which is a component of velocity ... is changing. Also the velocity of a moving body changes when its speed changes but remains moving towards the same direction ... :) :]
Is it possible to have positive acceleration?
Yes, it is possible to have positive acceleration if an object is speeding up in the direction of motion. Positive acceleration occurs when the velocity of an object is increasing, resulting in a change in speed or direction.
A magic tractor is going down a hill and turns into a corner at a high speed What happens next?
it turns into a field
When does the velocity of an object change?
The velocity of an object changes when there is a change in its speed, direction, or both. This can occur due to external forces acting on the object, such as acceleration or deceleration, causing the velocity to increase or decrease.
How can the velocity of an object change if the speed doesn't?
Easy answer: velocity is defined as speed in a specific direction. So, if a car is traveling at a velocity of due west, 60 miles per hour, then turns onto a road going north, the velocity has changed to due north, 60 miles per hour. But the speed has stayed the same.
Can the average velocity of a particle be zero but not its average speed?
Yes, since velocity is speed and direction its average can be zero. For example say a plane flies from point A to point B at 300 mph and turns around to go from B to A at 300 mph; its average velocity is 0 since it is in the same spot as it started ( the velocity vectors cancel) but its average speed is 300 mph.
Is speed and velocity the same thing?
Scientifically, Both are are distance over time. Speed is a scalar, however, which means there is no direction involved. Velocity on the other hand is known as vector, meaning direction is included. So like when an object is spinning round and around, its speed can be constant, but, because the direction is changing, the velocity does not remain constant. In common speech though the two are interchangeable
Is the magnitude of speed always the same as the magnitude of velocity... yes or no can you please also explain your answer using relevant principles of physics?
Yes, the magnitude of speed is the same as the magnitude of velocity. Velocity V= s(R/r)= sR' where s is the speed and R'=(R/r) is the unit vector in the direction R, where R is a position vector and r is the magnitude of R. So "s' is the magnitude (scalar) of the velocity. In Physics, a rotating object can have constant speed and changing direction. A car can have the same speed on the speedometer and experience a force as it turns at the this constant speed. The turning creates a force as there is acceleration caused by the change in velocity, in this case the change in direction, not the change in speed..
What happpens to a car moving at a constant speed as it turns a corner?
The car undergoes a change in velocity. It accelerates (and does so at a constant rate - if the rate of turn is constant) in the direction of the turn. The speed is constant, but the direction the car is going changes at each instant in time because it is turning. And because it is changing direction, that means its velocity is changing (because velocity is speed plus a direction vector).
Can the velocity of a car which is turning a curve be held constant?
The speed can be constant but the velocity can't, because the directionof motion ... which is a component of velocity ... is changing. Also the velocity of a moving body changes when its speed changes but remains moving towards the same direction ... :) :]
How does Velocity and acceleration apply to speed skating?
In speed skating, velocity refers to the speed of the skater in a specific direction, while acceleration describes the rate at which the skater increases their velocity. Skaters aim to maximize their velocity by using powerful strokes and maintaining optimal body positioning to minimize drag. Acceleration is crucial during starts and turns, as skaters need to quickly increase their speed to gain an advantage over competitors. Understanding these concepts allows skaters to optimize their performance and improve their overall race times.
Is it possible to have positive acceleration?
Yes, it is possible to have positive acceleration if an object is speeding up in the direction of motion. Positive acceleration occurs when the velocity of an object is increasing, resulting in a change in speed or direction.
Is acceleration how quickly an object's velocity changes?
Yes, acceleration is the how the velocity changes. This also includes when an object turns
What quantity has changed velocity or speed for a car that travels north at 88 kmh and then turns east while continuing to move at 88 kmh?
The speed of the car has not changed. What has changed is the direction of travel. Velocity is a combination of speed and direction, so has changed. Newton's laws say that a body will continue to travel at its starting velocity unless acted on by an external force. There are two forces working here. 1 a force reducing the northward speed of 88 km/h to zero, and 2 a force accelerating the car eastward up to 88 km/h.
