#### Answer

Choices B and D.

#### Work Step by Step

If the skier does not touch the snow, it cannot exert any force on him. Also, if the slope is vertical, the skier will be in freefall and again the slope won’t exert any force on him.

Published by
Pearson

ISBN 10:
0-32162-592-7

ISBN 13:
978-0-32162-592-2

Choices B and D.

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