1. Once a person is in the air during a jump can they modify their path in the air of:
a) their head
b) Their whole body centre of gravity
c) their hip joint
(yes or no)
2. To achieve peak horizontal distance on flat ground, what should the angle of take off be?
fads
yes to abc
To answer question 1, we need to understand the factors that influence the path of a person in the air during a jump. When a person is in the air, they cannot directly modify their path. However, certain actions can indirectly influence their trajectory. Let's break down the options:
a) Their head: No, the movement of the head alone cannot modify the path of a person in the air. The head does not have a significant impact on the body's overall motion.
b) Their whole body center of gravity: Yes, the person can modify their body's center of gravity by adjusting their body position. A person can make small adjustments to their posture or tilt their body slightly, which can influence the trajectory to some extent.
c) Their hip joint: Yes, the hip joint plays a crucial role in generating power and controlling body movements. By flexing or extending the hip joint, a person can modify the orientation of their lower body, which can indirectly affect the trajectory during a jump.
Therefore, the answer is "Yes" for options b) their whole body center of gravity, and c) their hip joint.
Moving on to question 2, to achieve peak horizontal distance on flat ground, the ideal angle of takeoff will be around 45 degrees. This angle allows for the most efficient conversion of vertical velocity into horizontal distance. It provides a balance between the upward force required for maximum height and the forward momentum needed for horizontal distance. Keep in mind that other factors like speed, technique, and environmental conditions can also influence the actual angle of takeoff.