An interplanetary model rocket club is visiting planet X, which has a local gravitational acceleration of 6 m/s². One of the club members launches a rocket straight up from the surface of the planet, using an engine that burns for exactly 6 s and produces a net upward acceleration of 2 m/s² for the duration of the burn. Once the engine burns out, the rocket is subject only to the planet's gravity and eventually falls back to the ground. On the graph, move the points to construct a plot of the rocket's height above the ground as a function of time for the 12 s time period following the launch. 50 48 46 44 42 40 38 36 34 32 30 28 26 24 2 22 20 18 16 14 12 10 6 4 2 1 2 6 8 9 10 11 12 time (s) Incorrect height (m)
Gravitational force
In nature, every object is attracted by every other object. This phenomenon is called gravity. The force associated with gravity is called gravitational force. The gravitational force is the weakest force that exists in nature. The gravitational force is always attractive.
Acceleration Due to Gravity
In fundamental physics, gravity or gravitational force is the universal attractive force acting between all the matters that exist or exhibit. It is the weakest known force. Therefore no internal changes in an object occurs due to this force. On the other hand, it has control over the trajectories of bodies in the solar system and in the universe due to its vast scope and universal action. The free fall of objects on Earth and the motions of celestial bodies, according to Newton, are both determined by the same force. It was Newton who put forward that the moon is held by a strong attractive force exerted by the Earth which makes it revolve in a straight line. He was sure that this force is similar to the downward force which Earth exerts on all the objects on it.
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