A player throws a ball with mass of 100 grams at an initial velocity vo = 25 m/s with an angle 8 = 60° from the horizontal at a height h₁ = 1.5 m. The ball hits the wall inclined a = 45° from the horizontal, at point B with a height h₂ = 2 m. After hitting the inclined wall, the ball rebounds horizontally to the left with a velocity v. Assume all surfaces are frictionless. Use angle of the velocity at point of impact B = 59.7°. 1. Given only the information disclosed so far and without using kinematic equations, which of the following methods is the most appropriate method to be used for solving the value of velocity of the ball just before impact with the inclined wall? 2. Which of the following best approximates the magnitude of the velocity of the ball at point B just before impact with the inclined wall? a. 24.8, b. 21.4, c.25.0, 12.5 3. When the ball hits the inclined wall, which of the following forces produces an impulse that is NOT negligible, given that the time interval At is very small? A. friction force bw ball and inclined wall b. weight of ball c. normal force bw ball and inclined wall d. all of the above 4. Which of the following best approximates the velocity of the ball at point B just after impact with the inclined wall, considering that the final velocity is purely horizontal? A. 12.50 m/s to the left b. 8.90 to the left c. 24.8 to the left d.33.9 to the left 5. Which of the following best approximates the value for the coefficient of restitution, considering that the final velocity is purely horizontal? A. 3.81, b. 0.731, c.1.0, d. 0.262

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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.