The speed may, or may not, change. Acceleration means that the velocity changes; this means that either the speed changes, or the direction.
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.
It stops accelerating, and falls the rest of the way at 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.
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.
The speed of the object reaches a level such that it obliterates the graph above and possibly puts the answer in the box below!
It stops accelerating, and falls the rest of the way at 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
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.