What is the Retarding Force on a Golf Ball Plugged in Soft Ground?

[Grinter1]

A Golf ball is struck with a high lofted club it falls to Earth under the influence of gravity from a height of 20m. It then plugs into soft ground and comes to rest suddenly without rebound. It then plugs in a depth of 5cm. Find the retarding force which acts on the ball. It has a mass of 45 grams.

 

[thebigstar25]

please show your work first ..