A child is swinging back and forth on a swing. Changes in her kinetic and potential energy are happening each moment. At which point, or multiple points, in her swinging would each of these two types of energy be at a maximum? In one to two sentences, describe these points and which type of energy is at a maximum at each point.(2 points)
The child's kinetic energy would be at a maximum at the lowest point of the swing, when she is swinging with the most speed. The child's potential energy would be at a maximum at the highest point of the swing, when she is at her maximum height and has the most potential for gravitational energy.
An athlete is practicing shotput using a 16-pound shot, and he throws it 40 feet. He then uses a 12-pound shot and throws it 50 feet. In three to four sentences, explain why there is a difference in these throws using the ideas of mass and speed and how each relates to kinetic energy.(4 points
The difference in the throws can be explained by the concepts of mass and speed, which are related to kinetic energy. Kinetic energy is directly proportional to both mass and speed. The first throw with the 16-pound shot would have a greater mass, but if the athlete didn't achieve a high speed during the throw, the kinetic energy might not be as high. In the second throw with the 12-pound shot, even though the mass is lower, if the athlete managed to achieve a higher speed, the kinetic energy could be higher, resulting in a longer throw. Thus, the combination of mass and speed influences the kinetic energy and ultimately determines the distance the shot is thrown.
simplified please
The difference in the throws is due to the mass and speed of the shots, which affect their kinetic energy. Kinetic energy is higher when there is a larger mass and higher speed. In the first throw with the heavier 16-pound shot, if the athlete didn't throw it with a high speed, the distance traveled would be shorter. In the second throw with the lighter 12-pound shot, if the athlete managed to throw it with a higher speed, it could travel a longer distance thanks to the increased kinetic energy.
