Acceleration is the change in velocity with respect to time. Velocity is the change in position with respect to time (not the change in speed with respect to time, as you have written). Both acceleration and velocity are vector quantities, which means they have both a magnitude and a direction.
Speed is simply the magnitude of the velocity. (It's what's called a "scalar" quantity, which is just a number without an associated direction.) An object can have a constant speed, but its direction of motion can be changing over time, so it's velocity is changing. The resulting nonzero change in velocity per unit time is the acceleration.
An object need not be moving in a circle to meet these conditions. An object that moves at constant speed, but follows any path that is not a straight line must experience an acceleration. A circular path (like a satellite's orbit) is simply one example example of this.
If you accelerate, your velocity isn't constant.
You can be accelerating and traveling at a constant speed if you change directions.
If you are traveling at a constant speed with changing direction there is a change in velocity, so you are accelerating.
No. 'Acceleration' means a change in speed or direction over time. If the car is moving at a constant speed in a constant direction, then it isn't accelerating.
Since acceleration involves a change in velocity, and object might be accelerating even though its speed is constant.
If you turn your vehicle in another direction, even at a constant speed, you will experience acceleration (sideways) because the vector direction has changed through the application of force.
You can be accelerating and traveling at a constant speed if you change directions.
If you are traveling at a constant speed with changing direction there is a change in velocity, so you are accelerating.
0. "Constant speed" means it is not accelerating.
No. 'Acceleration' means a change in speed or direction over time. If the car is moving at a constant speed in a constant direction, then it isn't accelerating.
Since acceleration involves a change in velocity, and object might be accelerating even though its speed is constant.
its not, if ur accelerating ur not staying at a constant speed.
If you turn your vehicle in another direction, even at a constant speed, you will experience acceleration (sideways) because the vector direction has changed through the application of force.
That's correct.
true
Not possible, acceleration dV/dt =0.
A constant speed means that the horse is neither accelerating nor decelearating Speed is a scalar which means it has a magnitude but no direction, while acceleration is a vector so it has both a magnitude and a direction. As the magnitude of the speed remains constant, the speed is constant but since the direction the horse travels in changes that horse is in fact accelerating.
No. An object is accelerating if it is changing speed or direction of travel. Since the person in question is running at a constant speed in a straight line, they are not accelerating.