Read the passage from [Moon Mission and Laika] What idea is supported in both passages?

●The first spacecraft was very small.
●Space exploration is continuously improving.
●Most astronauts mark the territory they visit in space.
●Technology plays an important role in space exploration.

the words "strangest" and "unusual" suggest (:

the boy's acceleration toward the girl is 2.08 m/s^2.

explanation:

according the newton's third law, the force causing the girl accelerate towards the boy will be me with equal counter-force causing the boy to accelerate towards the girl. these forces will be of equal magnitude and allows us to determine the boy's acceleration:

the boy's acceleration toward the girl is 2.08 m/s^2.

there is a sequence and logical steps to give an answer of a trouble.

1) strategy is necessary to develop an project idea.

2) to study and know the environment where you are going to work ( ecosystem).

3)   the materials resources to built the ideas.

4) to give a priority order in the context that you study. in this case human needs.