Question

an object is moving in a uniform speed in a circlular path of radius 7cm. Calculate the displacement when it completes.What type of motion it has? and calculate the distance.

Answer 1

You didnot mention at which time u want distance and displacement.I am going to calculate for half and full revolution.
Distance is the total path covered by the body and is scalar, whereas displacement is the shortest distance between initial and final positive with the direction from the starting point to the ending point.
Displacement we will calculate by findind distance between initial and final point
Half revolution
distance= (2*3.14*r)/2=pi*r=3.14*r=21.98cm
displacement is nothing but the diameter of the circle.
displacement=2*r=14cm.
Full revolution
distance=2*pi*r=6.28r=43.98cm
Displacement =0