Getting to Mars: that seems like a huge task! After all, at its closest point, Mars is 5.57 x 107 kilometers from Earth. That is 55,700,000 km! There is also the problem of getting yourself (and a spacecraft) off the surface of Earth and into space. All of this takes a careful application of Newton's Laws. Let's think about why all this requires so much effort. First of all, you and your spacecraft have mass, which, in turn, means you have inertia. Now, Newton tells us that if we have inertia and we are sitting still, we will keep sitting still until some force causes us to move. In the case of a spacecraft, the force to put the spacecraft in motion is usually some kind of engine. We are on the launching padT-minus 5, 4, 3, 2, 1blast off! The rocket engines begin firing, pushing the spacecraft into the air. Newton tells us that once the spacecraft is in motion, it will stay in motion until some force acts to slow it down. Question: Is there any force slowing the aircraft as it leaves the surface of Earth