A body of 0.02 kg falling from height 5 m into a pile of sand.The body penetrates the sand a distance of 5cm before stopping what force has the sand exerted on the body?

Question

\[(a)\;1.96\;N \quad (b)\;-19.6 \;N \quad (c)\;-0.196 \;N \quad (d)\;0.0196\;N\]