If a football player wants to become better at tacking by increasing his or her kinetic energy, and hasd already increased their speed, how else can the player increase their kinetic energy? A) increase height B) increase speed C) increase mass D) decrease speed

Answer 1

To increase kinetic energy, a football player can focus on increasing their mass. Kinetic energy (KE) is given by the formula:

\[ KE = \frac{1}{2} mv^2 \]

where \( m \) is mass and \( v \) is speed. If the speed has already been increased, increasing the mass (option C) will also lead to a higher kinetic energy.

Therefore, the correct choice is C) increase mass.