5) Whether the spring must have been compressed to its natural length ( find the compression 4x of the spring), so that when eves the desired ejection velocity of the body (the ejection velocity at point A, which you calculated Inclined plane has angle of inclination 0 = 30 * and side Al = 80 o question 3) Hint: Apply the Project-Energy Theorem. In calculating the total project take into account all the forces they produce work. When the body reaches point D it collides with a se and initially stationary body, and an object is formed. 1) Calculate the lengths of sides AB and Br. 6) Calculate the velocity of the object and the change of the kinetic energy during the Impact. from the point A body of mass m = 2kg is launched, which moves on AB and reaches B with The object, leaving the inclined plane at point B, performs a side shot. Consider speed 20m / s. as the beginning of the ax sitive y - upward direction and positive x - direction to the right. Think of time that the object leaves inclined plane. 2) If the coefficient of kinetic friction uk body - level is 0.2, to design and calculate all the forces exerted on the body when it is in the middle M 7) Find the orbital equation y (x) and characterize its shape. of distance AB. 8) Calculate the maxin num height from the ground 9) Calculate the time of impact on the ground. 3) Using the Project - Energy Theorem to calculate the launch speed 10) Calculate the position (x, y) of the point of impact on the ground and its distance r from point B. t point D. One second before hitting the ground, the object is at point D. 4) How long after the launch does the body reach point B? 11) Determine the position (x, y) of point P. An ideal weightless spring 2000 k = 2000 N / A is used for launching from the point m. 12) Ignoring the resistance of the air, the only force exerted on the object is When the body touches the compressed spring, the body position is at the starting point its weight. Calculate the weight of the object at point P. ( point A ) . 13) Calculate the x and y components of velocity and then the measure and the direction of the velocity of the object when it is at point P. 14) Calculate the acceleration of the object when it is at point P. 15) Express its position vector, velocity vector and acceleration vector agglomerate, when located at point D, as a fu ction of the unit vectors I and j. 16) Calculate the kinetic energy, the dynamic energy, the total mechanical energy and the momentum of the object when it is at point D