Freddy Frog drops vertically from a tree onto a horizontally-moving skateboard. The reason he doesn't slip off the skateboard is due to

A) inertia in motion.
B) momentum change.
C) friction between his feet and the board.


Answer: C

Physics & Space Science

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The _________________ hypothesis includes mergers with smaller galaxies and infalling gas to the standard formation of the Milky Way galaxy

Fill in the blank(s) with correct word

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A student adds two vectors with magnitudes of 200 and 70 . Which one of the following is the only possible choice for the magnitude of their sum?

a. 100 c. 200 b. 280 d. 70

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