Yes. You are holding your hand out. A tennis ball is floating just above it. The velocity of your body relative to the ball is zero. Why is the ball floating? Because you and the ball and the whole elevator are accelerating down to the ground. ---- Here's a proof by reductio ad absurdum that it's possible: If it were not possible for a body to have zero velocity and be accelerating, once anything stopped moving it could never move again.
Yes, it is possible. When a body thrown upward (from the surface of Earth or any other planet but with velocity small enough not to overcome the gravity) and reaches its maximum elevation its velocity is zero but the acceleration is g (due to gravity).
Yes, a body can have zero velocity and still be accelerating if its speed is changing, either increasing or decreasing, over time. This is because acceleration is a measure of how the velocity of an object is changing, regardless of its current velocity.
Not necessarily. If the net force acting on a body is zero, the body's velocity will remain constant (assuming no other forces act on it to change its velocity), but it doesn't mean the velocity will be zero. If the initial velocity is zero, then the velocity will remain zero if the net force is zero.
No. A velocity indicates a speed and direction. An acceleration is a change in speed or direction.
The acceleration of a body with uniform velocity is zero because acceleration is the rate of change of velocity. If the velocity is constant, then there is no change in velocity over time, so the acceleration is zero.
When acceleration is zero, the object's velocity can still be changing if the initial velocity is not zero. However, if acceleration is zero and the initial velocity is also zero, then the object's velocity will remain constant.
Yes, a body can have zero velocity and still have acceleration. For example, when a car is at a complete stop but then accelerates to start moving, it has zero velocity at the moment before acceleration kicks in. Another example is when an object reaches the peak of its motion and momentarily stops before accelerating back downwards due to gravity.
When a body has constant velocity, the acceleration is zero. This is because acceleration is the rate at which velocity changes, so if velocity is constant, there is no change and hence no acceleration.
The body is not zero, but the sum of all forces on it is. -- "Uniform velocity" means no acceleration. -- Acceleration is force/mass . -- If acceleration is zero, that's an indication that force must be zero.
Yes, it is possible for a body to have zero velocity but still have acceleration. This occurs when the body is changing its direction of motion, even though its speed remains constant. The acceleration in this case is due to the change in direction, not speed.
Yes, but it will have a non-zero velocity afterwards.
if it is not moving