Can velocity be non constant?
A body moving on a circular path with constant speed that is undergoing a uniform circular motion has variable velocity. The direction of velocity changes each moment and hence the velocity is not constant. Was this answer helpful?
What does it mean when velocity is not constant?
A change in speed, or a change in direction, or a change in both speed and direction means that the object has a change in velocity. Understand that in physics this means if you turn a corner, even if your speed is constant, your velocity changes. Often the velocity of an object is not constant.
What graphs have constant velocity?
If the velocity is constant, then the slope is constant (i.e., a straight line). If the velocity is changing, then the slope is changing (i.e., a curved line). If the velocity is positive, then the slope is positive (i.e., moving upwards and to the right).
What is a non zero velocity?
At the point where the velocity becomes zero, only the instantaneous velocity of the body is zero, at any time before or after this time, the object has a non-zero velocity. This means that the change in the velocity is still taking place when the velocity of the object reaches zero.
Can velocity be 0 and acceleration nonzero?
Yes, an object can have zero velocity and still be accelerating simultaneously. Let us consider an object moving in the forward direction.
How can you tell if a velocity graph is constant?
If you are given a velocity graph and it is horizontal (blue and green lines below), then the velocity is constant. If the graph is anything but horizontal, then the velocity is not constant. If you are given an acceleration function or graph and it is zero (green line below), then the velocity is constant.
How do u know if velocity is constant?
In order for the velocity to be constant, the magnitude of the velocity (or speed) and the direction of the velocity must not change. Therefore, an object that travels with constant velocity covers the same distance during each time interval and moves in the same direction during the same time interval.
What is non uniform motion example?
Movement of an asteroid, a car coming to a halt and a bouncing ball, all cover unequal distances in a time interval, hence they all are examples of non-uniform motion.
How do you know if acceleration is not constant?
Acceleration is not constant if the net force is not constant.
What is velocity constant?
To have a constant velocity, an object must have a constant speed in a constant direction. Constant direction constrains the object to motion in a straight path thus, a constant velocity means motion in a straight line at a constant speed.