No. As used in physics, the word "acceleration" means that THE VELOCITY CHANGES. More precisely, it refers to how quickly the velocity changes, in symbols, dv/dt.
No. A negative acceleration could mean a change in direction
This would indicate negative acceleration, which would mean that the object in question is speeding up.
Definitely. Acceleration means a change of speed or direction.It does not mean "speeding up".
Acceleration doesn't mean "speeding up". It only means that the speed or direction of motion, or both, are changing. Speeding up is positive acceleration in the direction you're moving. Slowing down is negative acceleration in the direction you're moving, or positive acceleration in the opposite direction.
Acceleration does not mean "speeding up". It means any change in speed ordirection. An object traveling in a circular path is constantly changing direction,so there is acceleration there.
"Acceleration" does not mean "speeding up". Acceleration means any changein the speed or direction of motion. An object with no acceleration moves at aconstant speed in a straight line. If its path is not straight, then the directionof its motion changes, which fits the definition of acceleration.
NO, acceleration refers to change in speed, either speeding up(positive acceleration) or slowing down (negative acceleration.)Zero acceleration merely means it is holding a constant speed, whatever that may be (including, but not limited to a constant speed of zero.)
"Acceleration" does not mean "speeding up". It means any change in thespeed or direction of an object's motion. So the object is accelerating if it'sspeeding up, slowing down, or moving on a curve ... even at constant speed.
When an object is falling, it accelerates, so it is speeding up. The faster it goes, the more air resistance there is on the object. Eventually, the force of the air resistance pushing up on the object will equal the force of gravity pushing down on the object. The forces on the object are balanced (they cancel out), so it will have no acceleration. This causes terminal velocity; the object is not speeding up anymore. When the forces on an object are balanced, it has no acceleration. This does not mean it has no velocity, it just means that the velocity is not changing (it does not speed up or slow down.)
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, acceleration is change in velocity. (And velocity is speed in a certain direction.) If an object slows down, then it is changing velocity and thus accelerating. (In this case, the acceleration is negative.) If an object changes direction, then it's velocity changes, so this is also acceleration. (This is centripetal acceleration.)
This means that it has a constant acceleration. It DOES NOT mean that the object is at rest.
It's possible, but not necessary, that a particle moving with constant speedhas zero acceleration. In order for acceleration to be zero, it's also necessarythat the particle be moving in a straight line.An object moving with constant speed around a curve has acceleration."Acceleration" does not mean "speeding up".
acceleration is the speeding up of some type of matter. deceleration is the slowing down of some type of matter
"Acceleration" doesn't mean "speeding up". It means the rate at which velocity is changing. And "velocity" doesn't mean "speed". It means speed and direction.
It means the object has NO ACCELERATION.
its slowing down gatorrificperson says.......The acceleration is in the opposite direction of the velocity
I am not sure what you mean by reversing a zero acceleration. An object's acceleration can, of course, change over time.
It is correct only if the object in question is subject to a constant acceleration.
Because "acceleration" doesn't mean 'speeding up'. It means any change inthe speed or direction of motion.The only motion that's not accelerated is motion at a constant speed in astraight line. If the speed is increasing, or the speed is decreasing, or thedirection is changing, that's acceleration.
No, an object with zero velocity does not necessarily have zero acceleration. The best example of this is an object that is thrown into the air. Let's look at that.The object that is lofted up is constantly accelerated by gravity. The object will have some initial velocity, and its velocity will decrease under the influence (the constant acceleration) of gravity. At some point it will "stop" in air for an instant, and the velocity of the object will be zero. But gravity has always been accelerating the object, and it will continue to do so, pulling it back down to earth. The object was accelerating at g, which is the earth's gravitational constant, even during the instant that it was not moving.Sooooo....in the above explanation, Quirkyquantummechanic appears to have successfully argued that "zero acceleration" is, in fact, a degree of acceleration, and is not the same as "no acceleration". Also, QQM indirectly pointed out that an object approaching zero velocity also approaches zero acceleration, and at the precise moment of zero velocity, the object is at zero acceleration albeit still under the influence of acceleration.Therefore, the answer to the original question is still "Yes" - an object at zero velocity does have zero acceleration.
Yes. Acceleration does NOT mean 'speeding up', or even 'slowing down'.'Acceleration' means any change in the speed or the direction of motion. Soif you take a curve at constant speed, there is acceleration present while yourdirection is changing around the curve.An object in a closed curved path ... like a race car in a circular or oval track, or a planetor moon in a closed curved orbit ... is ALWAYS accelerating, even if its speed never changes,because its direction is constantly changing.
Zero acceleration means that the velocity doesn't change. It doesn't mean that there is no velocity.
Accelerate. Using Newton's second law, Net Force = mass * acceleration rearranged the equation acceleration = Net Force/mass so when the force is non zero and the mass is non zero, the object will accelerate. Note: This does not mean that the object is always at rest when the force is zero, it simply means the velocity is constant (when velocity =0, the object is at rest).
Yes. "Acceleration" does not mean "speeding up". It means any change in speedor direction of motion. If the body is moving on a curve, even at a constant speed,its direction is changing, so there is acceleration.