A dilation occurs when the scale is greater than 1 from the center of the dilation. When the scale is less than 1 from the center it is a contraction. Since distance from center can be positive or negative, the contraction will occur with a scale factor of
B. -0.8 and
D. 0.8
So all you need to do is 7.35kg takeaway 2.6kg = 4.75kg
Mrs Warburton's bag now weighs 4.75kg
The ball will hit the ground between 8 and 9 seconds