What Is The Acceleration If Velocity Is Zero?

Can average speed be zero?

Speed is a scalar, and average velocity is a vector.

Average speed does not indicate direction and can only be positive or zero..

Is the velocity ever zero?

Answer and Explanation: The velocity is never zero in the case of a projectile launched at a nonzero non-vertical angle with respect to the…

Can there be acceleration if velocity is zero?

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.

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.

What causes negative acceleration?

According to our principle, when an object is slowing down, the acceleration is in the opposite direction as the velocity. Thus, this object has a negative acceleration. In Example D, the object is moving in the negative direction (i.e., has a negative velocity) and is speeding up.

Does initial velocity affect acceleration?

3. Initial velocity is independent of the slope of the graph; that is, the acceleration. An object thrown downward still accelerates after release at the same rate as an object that is dropped.

Is velocity 0 at the highest point?

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

What happens when velocity is zero?

Because the person always returns to the original position, the motion would never result in a change in position. Since velocity is defined as the rate at which the position changes, this motion results in zero velocity.

Can acceleration be negative when velocity is zero?

Why is the acceleration graph at zero? This object below moves with a constant velocity in the negative direction.

Can you have zero acceleration and nonzero velocity?

Answer and Explanation: Acceleration is the rate of change of velocity with time. As the velocity is a constant value over all the values of time, the rate of change of velocity is thus zero. So, acceleration is zero. So, zero acceleration and non zero velocity are possible for particles moving with constant velocity.

Can the initial velocity be negative?

Velocity. … Since the final position of the object (rfinal) may be either positive, negative, or zero, and either larger, smaller, or the same as the initial position (rinitial), the velocity may be positive, negative, or zero. The sign of the velocity depends on the coordinate system chosen to define the position.