You want me to say that the speed of an accelerating object is changing (or increasing), but I won't say it because it isn't necessarily so. The speed of the object may be constant even though it is undergoing acceleration. Acceleration means that velocity is changing. Velocity involves direction as well as speed. Acceleration may change the direction without changing the speed. Would you like an example ? The moon is revolving around the earth once a month in an orbit that is very nearly the shape of a circle. Assume for a moment that the moon's orbit really is a perfect circle. Then its speed is the same at every point in its monthly trip around the earth, never changing. But the direction of its motion is constantly changing, in order to remain on the circle. Since the direction is changing, this is acceleration, even though the moon's speed is constant.
The acceleration is the same direction of the velocity
Zero.
An accelerating object is one that is changing in either speed or direction. Thus any object that is turning is accelerating while maintaining a constant speed.
An object is not accelerating when it is moving in a straight line at an unchanging speed (which may be zero).
An object that is accelerating may be slowing down, gaining speed, and changing direction.
It will have increase in speed with increase in time
An object is accelerating if any of these things are happening . . .-- its speed is increasing-- its speed is decreasing-- its direction is changing.The object may be accelerating even if its speed isn't changing.Acceleration does not mean "speeding up".
An accelerating object is one that is changing in either speed or direction. Thus any object that is turning is accelerating while maintaining a constant speed.
An object is not accelerating when it is moving in a straight line at an unchanging speed (which may be zero).
An object that is accelerating may be slowing down, gaining speed, and changing direction.
It will have increase in speed with increase in time
It will have increase in speed with increase in time
It will have increase in speed with increase in time
An object is accelerating if any of these things are happening . . .-- its speed is increasing-- its speed is decreasing-- its direction is changing.The object may be accelerating even if its speed isn't changing.Acceleration does not mean "speeding up".
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.
Acceleration is the time rate of change of velocity. Velocity is a vector. It has a magnitude ( speed ) and a directio. If either the speed or the direction of motion changes the object is accelerating. Example; an object moving in a circle at constant speed is accelerating because its direction is continually changing.
An object with a constant (vector)velocity is not accelerating. An object with a constand (scalar)speed can actually be accelerating, a car with a constant speed that passes around a corner is changing direction and is subjected to a lateral acceleration.
In that case, the speed changes over time.
The rate at which the speed or direction of its motion is changing.