If a football player hits the ball with a force of 50 N, determine the reaction force. Science Newton’s third law of motion suggests that forces occur in equal and opposite pairs, explain why they do not cancel out each othe​

Aspring is used to stop a 50-kg package which is moving down a 20º incline. the spring has a constant k = 30 kn/m and is held by cables so that it is initially compressed 50 mm. knowing that the velocity of the package is 2 m/s when it is 8 m from the spring and neglecting friction, determine the maximum additional deformation of the spring in bringing the package to rest.