# When do you consider a body moving at a constant velocity?

When it's moving in a straight line at a constant speed. And it has

nothing to do with my judgment or opinion. That's the definition.

### It is possible for a body to have acceleration when moving with costant velocity and constant speed?

### Can a body have constant velocity when it has constant speed?

Of course. In fact, in order to have constant velocity, it must have constant speed. What you really want to know: Can a body have changing velocity when it has constant speed ? The answer to that one is also "yes", for example when it is moving in a circle, the speed is constant but the velocity is changing all the time (in direction).

### Is the displacement time graph of a body moving with uniform velocity always a straight line?

A displacement vs. time graph of a body moving with uniform (constant) velocity will always be a line of which the slope will be the value of velocity. This is true because velocity is the derivative (or slope at any time t) of the displacement graph, and if the slope is always constant, then the displacement will change at a constant rate.

### What is terminal velocity?

Terminal velocity is the constant maximum velocity reached by a body falling through the atmosphere under the attraction of gravity. An object is moving at its terminal velocity if its speed is constant due to the restraining force exerted by the air, water, or other fluid through which it is moving.

### Can your body sense constant velocity and explain?

Your body cannot sense constant velocity. For example, you cannot sense that the earth is turning nor can you sense that the earth is orbiting around the sun. And, if you are in a vehicle that is traveling with a constant velocity, you cannot sense that you are moving unless your eyes sense a change in position.

### How Can you tell from a velocity vs time graph that a moving object has changed direction?

velocity is nothing but speed of a body in the given direction. suppose if body is moving with constant velocity then VT graph will be parallel to the X -axis, if not then the VT graph is not parallel to the X-axis it means then object is moving with different velocity or it has its dierection or both velocity and aswell as direction.

### What is the magnitude of net force acting on a drop of rain falling down with a constant speed?

consider a sphere moving through a viscous medium the fluid layer in contact with the sphere is moving with same velocity but the layer far away is at rest. This makes a relative motion to be setup.viscous force acts on this drop.The backward force is proportional to the speed of the drop.at a stage the viscous force balances the downward force.hence the body moves with a constant velocity called terminal velocity.

### Can an objeact have constant speed and but variable velocity?

Speed is a scalar quantity while velocity is a vector quantity.It is possible that an object can have constant speed but if speed is constant while direction of motion is changing constantly then it means that body has variable velocity.An example of this phenomena is a body moving in a circle whose speed is constant but velocity is changing every instant due to change in direction at every instant.

### Describe the path of a moving object in the event that the objects accel is constant in magnitude at all time and a perpendicular to its velocity b parallel to its velocity?

Centripetal force is a force that makes a body follow a curved path: it is always directed orthogonal to the velocity of the body, toward the instantaneous center of curvature of the path. - See more at: http://www.chacha.com/question/what-is-the-path-of-a-moving-body-whose-acceleration-is-constant-in-magnitude-at-all-times-and-is-perpendicular-to-the-velocity#sthash.pqrkWxfT.dpuf

### Can a object falling from a height be in equilibrium in mid air?

Yes. An object is in equilibrium if the velocity is constant. A constant velocity can occur if the forces balance on the object. Consider that the gravitational force is balanced by the "air resistance force", then there is no net force and thus no acceleration. Then the velocity at which this occurs will be a constant and thus the body will be in equilibrium.

### If the displacement of a body is proportional to square of time will the body be moving with uniform velocity or uniform acceleration?

Let us suppose that the displacement is given by, x = kt2 , where k is constant of proportionality. Therefore, velocity of the body, v = dx/dt = d(kt2)/dt = 2kt Since, velocity depends on time ,the body is not moving with uniform velocity.... Again, acceleration of the body, a = dv/dt = d(2kt)/dt = 2k As the acceleration is independent of time , the body is moving with uniform acceleration..