How Much Force Does Water Exert on a Sandbag Dropped from 315m?

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SUMMARY

The discussion centers on calculating the force exerted by water on a 2.50 kg sandbag dropped from a height of 315 m. The sandbag reaches a velocity of 24.525 m/s upon impact with the water, and it comes to a stop 4.50 m below the surface. The law of conservation of energy is recommended as the primary method for determining the force, using the formula Work = Force x Distance.

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Brittykitty
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At an altitude of 315 m above a lake, a hot-air balloon pilot drops a 2.50 kg sandbag. If the bag comes to a stop 4.50 m below the surface of the lake, what force was applied by the water on it?

I was thinking v= 2.50kg x 9.81km/h= 24.525m/s
i can't remember how to get the force
 
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Like I replied in your other thread with the same problem, use the law of conservation of energy.

Work=force*distance.
 

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