Section 4-3 Newton\'s Second and Third Laws 4-18. An ice skater skates across a

Question

Section 4-3 Newton's Second and Third Laws 4-18. An ice skater skates across a rough patch of ice. For each force in the first column, give the number of the force in the second column that goes with it to make up an inter- action Cor action-reaction) pair. a. the backward force that the 1. the downward force that skater exerts on the ice to the skater exerts on the ice propel herself forward 2. the upward force that the b. the downward gravitational ice exerts on the skater force that Earth exerts on 3. the backward frictional force that the ice exerts on c. the upward force with the skater, tending to slow the skater which the ice supports the skater her down 4. the downward gravitational force that Earth exerts on the skater 5. the upward force that the skater exerts on Earth 6. the forward force that the ice exerts on the skater

Explanation / Answer

[a] -> [6]

The backward force that the skater exerts on the ice to move forward will have an equal forward force from the ice on the skater.

[b] -> [5]

The downwards gravitational force that Earth exerts on the skater will be equal and opposite to the upwards force that the skater exerts on Earth.

[c] -> [1]

The upward force with which the ice supports the skater is equal and opposite to the downward force that the skater exerts on ice.

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