A coil 3.65 cm radius, containing 540 turns, is placed in a uniform magnetic field that varies with time according to B=( 1.20×10−2 T/s )t+(2.80×10−5 T/s4 )t4. The coil is connected to a 660-Ω resistor, and its plane is perpendicular to the magnetic field. You can ignore the resistance of the coil. Find the magnitude of the induced emf in the coil as a function of time.
Find the magnitude of the induced emf in the coil as a function of time.
Possible Choices
E= 8.63×10−3 V +( 8.06×10−5 V/s3 )t3
E= 2.71×10−2 V +( 6.33×10−5 V/s3 )t3
E= 2.71×10−2 V +( 2.53×10−4 V/s3 )t3
E= 8.63×10−3 V +( 2.53×10−4 V/s3 )t3
What is the current in the resistor at time t0 = 4.90 s ?

Ireally don’t know

You need to be more specific.  i really don't know what a "motion map" is.you can draw a graph of an object's position, distance, displacement, speed,velocity, or acceleration versus time, or you can draw a graph of the object's x-position versus its y-position and not give any information about time at all.if the graph presents position or displacement against time,  then constant velocity is a straight line . . i.e. a line that has  constant slope.if the graph shows speed against time, then constant velocityis a horizontal piece of line.if the graph shows acceleration against time, then constant  velocity is a piece of line that lies on the x-axis . . it's value is zero.