John plotted a graph to show how the mass of aluminium rivets affected the distance the cup moved down.

using the graph (attached) explain why the graph stayed flat with masses greater than 40g.

the answer is mosques. they are an important part of islamic culture.

when two balls of the different masses are dropped from equal height, they reach the ground at the same time .this is because they experience the same acceleration.

the acceleration is independent of mass.

thus when they are dropped they will always maintain the same velocity and travel the same distance (neglect air resistance of course) at the same time.

if the person is shown to have +90n, then ans is -10n.

if the person is shown to have -90n, then ans is +10n.