A Block of Ice Slides Freely [No Air Resistance, No

question 26

Multiple Choice

A block of ice slides freely [no air resistance, no friction] down a slippery slope. The block starts from rest at the top of the slope, where it has a vertical height of 4 m above the bottom of the slope and where it has a gravitational energy of 1000 J. At a quarter of the way down the slope, the block's kinetic energy is

• A) 250 J.
• B) 500 J.
• C) 750 J.
• D) 1000 J.
• E) less than 250 J.

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