Yes. There can be an instant during a period of acceleration when speed is zero.
We can think of two examples right away:
1). Drop an object from your hand. As soon as you release it, downward acceleration
begins immediately, but speed is zero.
2). Toss an object (like a Baseball or a stone) straight up. Downward acceleration
due to gravity begins immediately. At first, its effect is to reduce the upward speed.
As soon as the upward speed is all gone, downward speed begins. Acceleration is
constant throughout, but at the instant when upward speed becomes downward
speed, the speed is zero.
No, an accelerating object cannot have zero speed. Acceleration is the rate at which the speed of an object changes over time. If an object is accelerating, its speed is increasing or decreasing, but it cannot be zero.
An object is not accelerating when it is moving in a straight line at an unchanging speed (which may be zero).
Yes, an object can have zero velocity and still be accelerating if its speed is changing in a direction other than its initial motion. For example, if an object is moving in a circle at a constant speed, its velocity may be zero at a certain point, but it is still accelerating due to the change in its direction.
An object must change its speed, change its direction, or both in order to be accelerating. Any of these changes will result in a non-zero acceleration.
Yes, a particle can have a velocity of zero and still be accelerating if its speed is changing. Acceleration is the rate at which the velocity of an object changes over time, so even if the particle's velocity is momentarily zero, if it is changing, it is experiencing acceleration.
No, an accelerating object cannot have zero speed. Acceleration is the rate at which the speed of an object changes over time. If an object is accelerating, its speed is increasing or decreasing, but it cannot be zero.
An object is not accelerating when it is moving in a straight line at an unchanging speed (which may be zero).
Not accelerating. It could be stationary or moving at a constant speed.
Yes, an object can have zero velocity and still be accelerating if its speed is changing in a direction other than its initial motion. For example, if an object is moving in a circle at a constant speed, its velocity may be zero at a certain point, but it is still accelerating due to the change in its direction.
An object must change its speed, change its direction, or both in order to be accelerating. Any of these changes will result in a non-zero acceleration.
Yes, a particle can have a velocity of zero and still be accelerating if its speed is changing. Acceleration is the rate at which the velocity of an object changes over time, so even if the particle's velocity is momentarily zero, if it is changing, it is experiencing acceleration.
Yes, an unbalanced force can cause an object to change its speed by accelerating or decelerating it. When the net force acting on an object is not zero, it will cause a change in the object's velocity, which includes changes in speed.
Zero acceleration means no change in velocity and no force on the zero accelerating body.
Absolutely. The key is to realize that a net force of zero on an object means only that it is not accelerating. This means that an object feeling zero net force can either be stationary or moving at constant speed in a straight line.
Yes. Acceleration is independent of speed. A perfect example of an object with zero speed but nonzero acceleration is an object at the apex of being thrown upward. The entire time it is in the air it is accelerating downward. At its maximum height its speed is zero.
It will have increase in speed with increase in time
It will have increase in speed with increase in time