If a 4 engine jet accelerates down a runway at 8.7 m/s^2, suppose now that all 4 engins are operational on the jet from the previous question. what acceleration would this fully functional jet experience if it were towing 2.4 identical but inopeational jets?

Explanation:

One of the first propulsion characteristics given in the example is that all engines are equal.

In this way if we have 4 engines running at the same time, it means that its capacity is 100%.

Under this premise, if 100% is found, the Jet is capable of reaching a speed of 8.7m / s ^ 2.

However, the question is, what would happen if 2.4 "Engines" now work.

To do this then we make a simple equivalence,

If 4 engines is the equivalent of 100%, when would it be 2.4 engines?

In this way it would mean that the body could be driven to 60% of its total.

So

kepler used the data from tycho blahe (his mentor) to construct the laws of planetary motion.