A 1 kg mass falls from a height of 10 m into a sand box. What is the speed of the mass just before hitting the sand box? If it travels a distance of 2 cm into the sand before coming to rest, what is the average retarding force?

A 1 kg mass falls from a height of 10 m into a sand box. What is the s

1.	A 1 kg mass falls from a height of 10 m into a sand box. What is the speed of the mass just before hitting the sand box? If it travels a distance of 2 cm into the sand before coming to rest, what is the average retarding force?
A.	12 m/sec and 3600N
B.	14 m/sec and 4900N
C.	16 m/sec and 6400N
D.	18 m/sec and 8100N
Answer» C. 16 m/sec and 6400N

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A 1 kg mass falls from a height of 10 m into a sand box. What is the speed of the mass just before hitting the sand box? If it travels a distance of 2 cm into the sand before coming to rest, what is the average retarding force?

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