Question

1.You are in a plane that flies horizontally with speed 900 km/h ( 250 m/s) when an engine falls off. Neglecting air drag, assume it takes 25 seconds for the engine to hit the ground.

    (a) How high was the plane flying?

    (b) What is the horizontal distance that the engine covers before hitting the ground?

    (c) If the plane somehow continuous to fly as if nothing had happened, where is the engine relative to the airplane at the moment the engine hits the ground?

2. At a particular point in orbit a satellite in an elliptical orbit has a gravitational PE of 6000 MJ with respect to Earth's surface and a KE of 5000 MJ. Later in its orbit, the satellite 's PE is 7000 MJ. What is its KE at that point? Explain.

Answer 1