The car undergoes a change in velocity. It accelerates (and does so at a constant rate - if the rate of turn is constant) in the direction of the turn. The speed is constant, but the direction the car is going changes at each instant in time because it is turning. And because it is changing direction, that means its velocity is changing (because velocity is speed plus a direction vector).
Velocity is Speed in a given direction. Moving at constant velocity is equivalent to say moving with a constant speed in a specified direction. So, moving at constant velocity implicitly means moving with constant speed.
Yes, because his/her direction is changing. If you are referring to the actual number (0 m/s2, because he/she is moving at a constant speed), no, that does not change.
Yes. If an object is moving at a constant speed the average speed and the constant speed are the same.
A car moving at constant speed in a straight line is also moving at constant velocity.
A motion with a constant speed will always be moving the same speed A motion with a constant acceleration will constantly be gaining speed, and does not remain moving at the same speed.
The effect of balanced forces is the fact that the object is moving at constant speed. An object moving at constant speed is under the influence of balanced forces.
None, as "not moving at all" is just moving at a constant speed of zero. Special relativity shows that there is nothing unique or different about zero speed. It is just a value of constant speed.
determine if the momentum of an object moving in a circular path at constant speed is constant.
determine if the momentum of an object moving in a circular path at constant speed is constant.
If the car is moving in a constant direction at a constant speed, then the net force on it is zero.
When the speed of an object remains the same - it does not increase or decrease - we say it is moving at a constant speed.
A car moving with a constant speed is moving with a constant velocity if and only if it is travelling along a straight line.