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AP® Physics 1 & 2

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Moderate

Potentially Going To the Top

APPH12-WKZDEW

A child on a sled has a horizontal velocity ($v$) of 6.0 m/s after going down a snowy hill when the child and sled combination encounters a smaller hill. It is assumed that:

  • The child and the sled have a total mass of 45 kg.
  • Friction and air resistance are negligible.
  • The child and sled coast to a complete stop at the top of the smaller hill.

What is the height of the smaller hill?

A

0.31 m

B

0.93 m

C

1.8 m

D

18 m