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The Height of a Hill

CLMECH-UVGZ64

A girl rides a sled down a frozen hill. She starts from rest at the top of the hill and reaches a speed of $16$ $m/s$ at the bottom of the hill.

How tall is the hill? Neglect friction.

A

$130$ $m$

B

$26$ $m$

C

$13$ $m$

D

We need to know the mass of the girl to answer.

E

We need to know the slope of the hill to answer.