acceleration when velocity is zero?
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.
604382
Then, explain your reasoning. At a projectile's highest point, its velocity is zero. At a projectile's highest point, its acceleration is zero.
573943
At a projectile's highest point, its velocity is zero. At a projectile's highest point, its acceleration is zero.
1314036
Yes,a body can have zero velocity ,and constant acceleration. A body will have zero velocity when in a circular motion, i.e the body comes back to its initial position. ... Since the motion is circular,there will be a constant acceleration.
924891
Explanation: If an object is moving with a constant velocity, then by definition it has zero acceleration. So there is no net force acting on the object. The total work done on the object is thus 0 (that's not to say that there isn't work done by individual forces on the object, but the sum is 0 ).
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).
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.
1440939
Acceleration is simply a rate of change of velocity. So the magnitude tells you, how quickly velocity changes.
188092
For a projectile fired straight upwards , its velocity at max height = 0 whereas its acceleration at that instant is 'g' ( = 9.8 m/s² ) vertically downwards . So dot product of velocity and acceleration is zero at max hieght in this case .
700622
An object with a constant acceleration but zero velocity is not possible, because according to the definition of acceleration, acceleration is the rate of change in velocity. If an object is at zero velocity it does mean that it is at rest. So there is no change in velocity, hence no acceleration.
147928
It's possible for a body to have its velocity zero even if the acceleration is non zero. For example consider a swinging pendulum bob. ... This actually happens because acceleration is not velocity - but rate of change of velocity.
1297437
Velocity is the speed AND DIRECTION of travel. Acceleration is the CHANGE in VELOCITY. ... If we look at the definition of acceleration, by definition, if an object's velocity is not changing, its acceleration is zero. Therefore, no, it is not possible to have acceleration with constant velocity.
1303664
When a body starts from rest or it changes it direction of motion,it is called as initial velocity. We generally consider initial velocity is equal to zero(u=0),only when the object starts from rest. Generally at time (t=0),the initial velocity is zero.
491555
When acceleration is zero …that means the rate of change of velocity is zero .. So the velocity do not changes … i.e if the body is at rest , it'll remain at rest and if it's moving at a velocity 'v' …it'll continue moving away that same velocity.
516385
So once you have reached your maximum velocity, that means your velocity can't get any higher. So, your acceleration must be zero.
559371
Average acceleration = (change in velocity)/(time it takes). Since the car's change in velocity is zero, its acceleration is zero. Since (average) acceleration = (change in velocity)/(time it takes), the car's acceleration = (100 km/h)/(10 s) = 10 km/h/s.
387155
Acceleration is the rate your velocity (not speed) changes. The acceleration of a car that travels in a straight line at a constant speed of 100 km/h is zero. Average acceleration = (change in velocity)/(time it takes). Since the car's change in velocity is zero, its acceleration is zero.