Examples of Unbalanced Forces

Examples of Unbalanced Forces ----------------------------------------------------------------------------------------------------------Question: Which of the following are examples of unbalanced forces acting on an object? - rolling a bowling ball - jumping off a diving board - opening the microwave door - a bird flying at constant speed and direction - a person standing still in line. ----------------------------------------------------------------------------------------------------------Response: Unbalanced forces refer to situations where the net force acting on an object is not zero, resulting in a change in the object's motion.      Rolling a bowling ball: This is an example of unbalanced forces as the force applied by the bowler exceeds the opposing friction and air resistance. Jumping off a diving board: This also represents unbalanced forces. The force of the jump exceeds gravitational force momentarily, resulting in upward acceleration. Opening the microwave door: This involves unbalanced forces as the applied force to open the door overcomes the resistance of the door's hinges and any static friction. A bird flying at constant speed and direction: This is an example of balanced forces, as the forces acting on the bird (lift, weight, thrust, and drag) are equal. A person standing still in line: This is another example of balanced forces. The downward force of gravity is balanced by the normal force from the ground. In summary, the examples of unbalanced forces from the options given are: rolling a bowling ball, jumping off a diving board, and opening the microwave door. Useful Sources:    Serway, R. A., & Vuille, C. (2014). Physics for Scientists and Engineers. Cengage Learning. Halliday, D., Resnick, R., & Walker, J. (2014). Fundamentals of Physics. Wiley. Cutnell, J. D., & Johnson, K. W. (2012). Physics. Wiley.