If a body is at rest, it experiences no acceleration. From what frame of reference are you observing the object? You are in a closed elevator in freefall toward earth. You have a tennis ball with you, hanging freely and motionless in front of you (disregarding the drag from air). From your frame of reference it is motionless. I am observing you and the tennis ball from the earth's surface. From my frame of reference, you and the ball are accelerating at 9.8 meters per second per second. Neither of us is wrong. But it won't go so well for you and the ball unless I beam you out, which I surely do.
Uniform (or constant) acceleration means that the acceleration doesn't change over time.
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.
When forces are balanced, the object at rest will remain at rest, while the object in motion will continue to move at a constant velocity. This is due to Newton's first law of motion, which states that an object will remain at rest or in motion with constant velocity unless acted on by an unbalanced external force.
Yes, it is possible for a body to have zero velocity while experiencing non-zero acceleration. This occurs when the body is changing direction but not speed, such as in circular motion. Another example is when the body is momentarily at rest at the peak of its motion, like a ball thrown upwards.
Acceleration is the CHANGE in velocity; you're assuming CONSTANT velocity. So the acceleration is zero.
No a boday while rest cannot be in acceleration because of the momentum of the body ...........................
No, a body cannot have acceleration when it is momentarily at rest. Acceleration is the rate of change of velocity over time, so if the body is at rest, its velocity is zero, and therefore its acceleration is zero as well.
yes!A2. The real problem is deciding when a body is at rest - or is it just the rest of the universe that is moving?
zero
Zero.
No, a body cannot have acceleration while at rest. Acceleration is the rate of change of an object's velocity, meaning it requires the object to be in motion. When an object is at rest, its velocity is zero, so there is no change in velocity, hence no acceleration.
Zero
Zero
To come to rest, its velocity must change, therefore it will accelerate. Once it is at rest, if it remains at rest, it will no longer accelerate, i.e., its acceleration will be zero.
If a body starts from rest, it means its initial velocity is zero. In this case, if the body is in motion, it has undergone acceleration to reach that velocity. Therefore, the acceleration of the body must be non-zero, indicating a change in velocity over time.
acceleration is a relative quantity . state of rest or motion is also relative . if two body is in rest or moving with same velocity and having same acceleration then one is in state of rest with respect to other . suppose a person sitting in a train then he is in rest with respect to train but he is moving with the acceleration of train with respect to the ground.
If a body has zero acceleration, it means the body is either at rest or moving at a constant velocity in a straight line. This implies that there is no change in its speed or direction over time.