Is force needed to keep a body moving with uniform velocity ?

A magnetic filed vecB=B_0 sin"(omega t)hatk covers a large region where a wire AB slides smoothly over two parallel conductors separated by a distance d (Fig. EP 6.22). The wires are in the x-y plane. The wire AB (of length d) has resistance R and parallel wires have negligible resistance. If AB is moving with velocity v, what is the current in the circuit? what is the force needed to keep the wire moving at constant velocity?

Draw velocity-time graph for a body moving with uniform velocity. Hence show that the area under the velocity-time graph gives the distance travelled by the body in a given time interval.

Fill in the blanks: An __ force is required to keep a body in uniform circular motion.

Discuss if a body moving with uniform velocity is in equilibriuim or not.

What is the acceleration of a particle moving with a uniform velocity?

Find the displacement of a particle after certain time in two dimensions moving with uniform velocity.

The motion of the projection on a diameter of the circle of a point moving with uniform angular velocity on the circumference of the circle is :