Javelin is an Olympic sport where the athlete throws a wood stick a certain horizontal distance, as shown in the image below. A В Range In this problem we are going to assume no air friction, and assume that the javelin lands at the same height that it is launched from. a) At what angle should a javelinier aim the javelin to hit the largest range (farthest distance) possible? (You can just write down the number.) b) The world's record is held by Jan Zelezny, at 98.48m. Using the angle from part (a), what is the minimum speed at which Zelezny could throw his javelin to reach that distance?
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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