Question

If you're on defense and you're 1 pass away, where should you be and what should you be saying?

A. You should be closing down the opponent and shouting "Mark!"
B. You should be marking your specific opponent and shouting "Pressure!"
C. You should be supporting the player applying pressure and shouting "Cover!"
D. You should be organizing the defense and shouting "Hold!"

Answer 1

Football coaches recommend keeping feet on the ground for effective blocks, hits, and tackles, utilizing the principles of momentum, work, and energy for optimal performance. Being grounded allows for maximal force generation and control.

Step-by-step explanation:

Football coaches advise keeping feet on the ground for blocks, hits, and tackles due to the principles of momentum, work, and energy. When a football player’s feet are on the ground, they can push off the ground to generate maximum force. This is because momentum, or the product of mass and velocity, is conserved in the system. Furthermore, since work is the process of energy transfer, being grounded allows players to transfer energy more efficiently through a stable base. Lastly, keeping the feet on the ground enables a player to utilize their body weight and muscular force optimally to perform an effective tackle. On the other hand, being airborne during a tackle reduces control and the ability to apply force effectively.

A small force can impart the same momentum to an object as a large force if it acts over a longer time period. This is due to the concept that momentum is the product of force and the time over which it acts.