Physics

To solve this, we calculate the total time by splitting the motion into two parts: falling in free fall and deceleration in the sand.

 

Time to fall 5m in free fall

The time () to fall 5m under gravity is given by:

 

Velocity just before hitting the sand

The velocity before hitting the sand () is given by:

 

Time to decelerate in the sand

The deceleration () while the ball travels into the sand is constant and can be found using:

,

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