## How can an object have zero acceleration?

Yes, an object that was set in motion in the past by some force, but that is no longer being acted on by a net force, is moving but with zero acceleration, i.e. it is moving at constant velocity. For example, a puck sliding along a horizontal plane of ice after being hit with a hockey stick.

## What does it mean if an object has zero acceleration?

If there is zero acceleration, that means there is no net force on the object, or .

**What is an example of zero acceleration?**

No acceleration means no change in velocity. For example an apple thrown in space. A photon has zero acceleration because it can’t be accelerated. All other examples of zero acceleration are where the “thing” is moving at a constant velocity relative to an inertial reference frame.

**Can an object have zero velocity and zero acceleration?**

Yes, an object can have zero velocity and still be accelerating simultaneously. Now, suddenly a force acts on it and tries to accelerate the object in the reversed direction. While observing the object, you will find that the object will continue to move forward for some time and then stops instantly.

### Does an object with zero acceleration must have zero velocity?

Explanation: For the most part velocity is not zero if an object is accelerating. 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.

### Can an object have acceleration with zero velocity?

Yes, an object can have zero velocity and still be accelerating simultaneously. Let us consider an object moving in the forward direction. Then the object will start to move in the backward direction.

**Can an object have acceleration but no velocity?**

It is possible to have a non-zero value of acceleration when the velocity of a body is zero. At the highest point, the velocity of the ball becomes zero, after which it starts to fall down. At this point, the velocity of the ball is zero yet its acceleration is equal to g=9.8m/s2.

**Can an object have zero acceleration and be at rest?**

Thus, even though the velocity of an object at rest must be zero, acceleration can clearly be non-zero for objects at rest. A particle that is thrown vertically upwards stops momentarily at the highest point of motion.

#### Why is the acceleration zero in an object that has constant velocity?

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 ).

#### Can an object have zero velocity and non zero acceleration?

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.

**How do I determine which object has the greatest acceleration?**

To determine which object has the greatest acceleration, you would use the formula: acceleration = (Final Velocity – Initial Velocity) / Time.

**Can an object be accelerating when its speed is zero?**

Yes, it’s possible to have zero speed while accelerating, but only for an instant. This situation happens frequently. 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.

## Can an object in free fall have zero acceleration?

There is an misconception in your question. All objects in free fall are under constant acceleration(given constant force) when there is no medium (or in vacuum) including raindrops.

## Does constant speed mean zero acceleration?

First, constant speed does not mean zero acceleration. An object could be going on a curved path at constant speed. The object has an acceleration. Zero acceleration means constant velocity. Also to be noticed is that the definition of acceleration does not involve any information about forces.