A91 kg football player catches a 0.700 kg ball with his feet off the ground with both of them moving horizontally. the player's speed is 5.30 m/s, and the ball's speed is 28.4 m/s. (a) first, consider the situation where the player and the ball are going in the same direction, and take this direction as positive. calculate their final velocity (in m/s). m/s (5 attempts remaining) input 1 status (b) calculate the change in the kinetic energy (in joules) of the system (of the player and the ball). δke

a) V = 5.47m/s

b)

Explanation:

Since the ball and the player become a whole system after the catch:

Solving for V:

The initial kinetic energy was:

The final kinetic energy was:

So, the change in the kinetic energy was:

at positions a, g kinetic energy is maximum.

at position d, potential energy is maximum.

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