A small ball and a larger ball with greater mass are dropped from a roof. The larger ball strikes the ground with greater force than the smaller ball.
Answer:
2400 cm
Explanation:
The milky way has diameter of 100000 light years.

The local group is the collection of galaxies which includes the milky way.
10 million light years is the diameter of the local group.

Hence, the diameter of the scale model of the local group would be 2400 cm
Should be just 2 km. - 2 km would mean it is moving in the opposite direction which come to think of it may be fine. You really can't tell.