Table of Contents

- 1 What does it mean when acceleration is non zero?
- 2 What direction does acceleration point?
- 3 What happens when acceleration is zero?
- 4 Can you have a zero acceleration but non-zero velocity?
- 5 What happens when acceleration is 0?
- 6 Is acceleration zero at the highest point?
- 7 How is it possible to be accelerating when the speed is zero?
- 8 How is there an acceleration where velocity is zero?

## What does it mean when acceleration is non zero?

Mathematically, zero acceleration means no acceleration: velocity is not changing. So nonzero acceleration means non-stop acceleration: velocity is always changing. Rotation is considered a form of acceleration, and so is gravity.

### What direction does acceleration point?

Acceleration is in the direction of the change in velocity, which points directly toward the center of rotation—the center of the circular path. This direction is shown with the vector diagram in the figure.

**At what position is the acceleration zero?**

When acceleration is zero (that is, a = dv/dt = 0), rate of change of velocity is zero. That is, acceleration is zero when the velocity of the object is constant. Motion graphs represent the variations in distance, velocity and acceleration with time.

**What is the direction of zero acceleration?**

Since the total acceleration of any moving particle is zero. According to Newton’s first law, if the total applied force on a moving particle is zero, then the particle is along a straight line with constant velocity. In the case of zero acceleration, the direction of motion of the particle will not change.

## What happens when acceleration is zero?

If acceleration is 0, the velocity is not changing. If the velocity is constant (0 acceleration) then the object will continue without slowing down or speeding up.

### Can you have a zero acceleration but non-zero velocity?

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.

**Does acceleration have direction?**

Acceleration has direction, just like velocity. In the figure below, both cars are accelerating because their speeds are changing. When a car’s acceleration and velocity are in the same direction, the speed increases and the acceleration is pos- itive.

**What happens to the acceleration when the velocity is zero?**

## What happens when acceleration is 0?

### Is acceleration zero at the highest point?

At a projectile’s highest point, its velocity is zero. At a projectile’s highest point, its acceleration is zero.

**Can acceleration be non-zero when velocity is zero?**

Acceleration is the rate of change of velocity of an object with respect to the time over which this change occurs. It is possible to have a non-zero value of acceleration when the velocity of a body is zero. After this, the object starts moving in the opposite direction (that is in the direction of force).

**Can acceleration be non zero when velocity is zero?**

## How is it possible to be accelerating when the 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.

### How is there an acceleration where velocity is zero?

When you through a ball upside and when it reaches the top it pauses for a moment. At this moment, the velocity is zero but the ball still has acceleration and that acceleration is due to acceleration due to gravity . Thus at the peak, the velocity is zero but the object is still accelerating.

**How do you know the force for an acceleration of zero?**

If acceleration is zero, there is no force. If F=ma, and F is force, and m is mass and a is acceleration, then if acceleration is zero, then mass is irrelevant. (Zero times anything = zero). If acceleration is zero (times mass, which equals zero), then obviously force must also be zero.

**Can you go around a curve with zero acceleration?**

Yes, it is impossible to go around the curved path with zero acceleration. Acceleration is change in velocity. And velocity( speed+ direction) changes at every point in a curved path because there is change in direction at every point.