The massive ram of a pile driver falling from rest strikes a pile ...

[clmills979]

The massive ram of a pile driver falling from rest strikes a pile with a speed that depends on the
 
  A) initial height of the ram.
  B) initial potential energy of the ram.
  C) distance the ram falls.
  D) all of the above

Question 2

A melon is tossed straight upward with 100 J of kinetic energy. If air resistance is negligible the melon will return to its initial level with a kinetic energy of
 
  A) less than 100 J.
  B) more than 100 J.
  C) 100 J.
  D) need more information

[krakiolit]

Answer to Question 1

Answer: D

Answer to Question 2

Answer: C

[clmills979]

TYSM

[parshano]

Gracias!