Point A lies on the circle and has an x-coordinate of 1. Which is the correct calculation of the y-coordinate of point A?

constant acceleration- a

constant velocity- c

no velocity or acceleration- b

explanation:

for body moving with a constant acceleration, the rate of change of displacement changes over time. this is proven by the increasing gradient of the curve (a) against time.

a body that is moving at constant velocity covers equal distances over equal periods of time, thus the straight line with a constant gradient c.

a stationary body   covers no displacement as time elapses. thus the flat line with   zero gradient.

answer: translate the circles so they share a common center point and dilate circle y by a scale factor of 3.