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What else can I help you with?
How an objects be motionless and in equilibrium?
When an object is in equilibrium, the acceleration is zero. When the acceleration is zero, the velocity does not change; the non changing velocity includes the case when the velocity has value zero.
IS velocity possible in zero gravity?
Velocity is relative to the observer and or objects that are in the area , if your sitting in true zero gravity from your point of view you will be standing still but in-reality your velocity will based on your original thrust. Some one watching you (at a zero velocity) from another location might see you zoom by at the original velocity. So the new question is if that other person has zero velocity and is in zero gravity what time will it be when they look at their watch ? Hmmm
If an objects velocity time graph is a straight line parallel to the taxis what can you conclude about the objects acceleration?
If an object's velocity-time graph is a straight line parallel to the time axis, then the object's acceleration is zero. This means that the object is moving at a constant velocity.
Describe the momentum of objects at rest?
Measured in the frame of reference in which the object is at rest; zero since momentum is mass times velocity. Note that momentum is zero but inertia is not.
When velocity is positive and acceleration is zero what happens to an objects motion?
When acceleration is zero, then the object is moving in a straight line with constant speed. (That's the effective meaning of constant velocity.)
Can constant velocity be zero?
Yes. Zero velocity is a velocity; if it is always zero then it is a constant velocity.
Is the net force acting on a body is zero will the velocity be zero?
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.
Does rolling friction always reduce the net force acting on against an objects motion to zero?
The net force will be zero only if the velocity is constant, which means acceleration is zero.
Can particle have zero speed and non zero velocity?
No, a particle cannot have zero speed and non-zero velocity simultaneously. Speed is the magnitude of velocity and if speed is zero, then velocity must also be zero.
When the acceleration is zero what can you say about the velocity of an object?
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.
What is the momentum of zero?
The momentum of an object with zero velocity is zero. Momentum is calculated as mass multiplied by velocity, so if velocity is zero, momentum will also be zero.
What causes objects to change their velocity?
A force, or several forces that don't add up to zero, acting on the object.
