what is the difference between uniform acceleration and zero acceleration?
476131
Zero acceleration simply means there is no change in velocity with time and no change in velocity means neither its magnitude is changing nor the direction. Whereas constant acceleration say for example g=9.8m/s^2 shows the change in velocity with time (either its speed or direction).
985643
Yes. Anytime the velocity is constant, the acceleration is zero. For example, a car traveling at a constant 90 km/h in a straight line has nonzero velocity and zero acceleration. ... Its acceleration will change in magnitude and direction as the elevator starts and stops.
407423
If the motion is in a straight line with constant speed, then acceleration is zero. But if the motion is circular with a constant speed, then the acceleration is never zero. This is because at every point, direction of motion is changing, hence its velocity is changing, therefore, resulting in an accelerated motion.
120461
Since acceleration is the change in velocity over time, there has to be a change in velocity for something to accelerate. In other words, if something is accelerating, it has to have a variable velocity. If the velocity is constant however, the acceleration is zero (because the velocity isn't changing over time).
845442
For uniform circular motion, for example, the speed remains constant but the direction of motion changes continuously. The acceleration vector has non-zero length and always points toward the center of the circle. Acceleration is zero only if the speed is constant and the motion is along a straight line.
1075840
Uniform linear motion is motion with a constant velocity (zero acceleration) and uniform circular motion is motion with constant speed and constant centripetal acceleration (non zero).
258004
Yes, it's possible to have zero speed while accelerating, but only for an instant. ... Acceleration is the rate at which an object's speed and direction are changing with time, so whenever an object passes through zero speed as it reverses directions it has a non-zero acceleration but a speed of zero.
200907
either magnitude or direction or both of an object changes with respect to time. Uniform acceleration is the change of equal velocity in equal interval of time. Non uniform acceleration is the change of unequal velocity in equal interval of time. The motion of a ball rolling down.
982619
Uniform circular motion. In the case of the uniform circular motion, the speed (v) of the particle in uniform circular motion is constant (by definition). This implies that tangential acceleration, aT, is zero. Consequently, angular acceleration ( aTr ) is also zero.
233933
In case of uniform acceleration, there are three equations of motion which are also known as the laws of constant acceleration. Hence, these equations are used to derive the components like displacement(s), velocity (initial and final), time(t) and acceleration(a). ... The three equations are, v = u + at.
648372
Uniform or constant acceleration is a type of motion in which the velocity of an object changes by an equal amount in every equal time period. A frequently cited example of uniform acceleration is that of an object in free fall in a uniform gravitational field.
701313
And it's not zero, it's -9.8m/s/s, as you acknowledge, so the direction of acceleration is meaningful. The no math answer to this one is to realize that acceleration is the rate of change of velocity. At the top most point, the velocity is indeed zero.
473978
Uniform velocity refers to the constant moving speed. Uniform acceleration refers to an object moving with constant acceleration w.r.t. time.
1141366
Uniform Acceleration Equations One of the common examples of uniformly accelerated motion is freely falling bodies. The only acceleration which is acting on the body is g (acceleration due to gravity).
1266400
Explanation: UNIFORM VELOCITY: when an object is moving in a straight line, without any acceleration. ... CONSTANT VELOCITY: when the speed of an object has not changed even though the object may have experienced a change in direction (zero acceleration).
541369
Yes. For example, a rock thrown straight up in the air has a constant, nonzero acceleration due to gravity for its entire flight. However, at the highest point it momentarily has a zero velocity. A car, at the moment it starts moving from rest, has zero velocity and nonzero acceleration.
440626
If the velocity is constant however, the acceleration is zero (because the velocity isn't changing over time). Although at an instant in time it is possible to have zero velocity whilst accelerating. For example, if you drop an object at the instant you release it it has zero velocity but it is accelerating.