A 46.8-kg skater is standing at rest in front of a wall. By pushing against the...

 

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A 46.8-kg skater is standing at rest in front of a wall. By pushing against the wall she propels herself backward with a velocity of -1.43 m/s. Her hands are in contact with the wall for 0.773 s. Ignore friction and wind resistance. Find the average force she exerts on the wall (which has the same magnitude, but opposite direction, as the force that the wall applies to her). Note that this force has direction, which you should indicate with the sign of your answer. A 46.8-kg skater is standing at rest in front of a wall. By pushing against the wall she propels herself backward with a velocity of -1.43 m/s. Her hands are in contact with the wall for 0.773 s. Ignore friction and wind resistance. Find the average force she exerts on the wall (which has the same magnitude, but opposite direction, as the force that the wall applies to her). Note that this force has direction, which you should indicate with the sign of your answer.

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Given The mass of the skater is m468 kg The skater is initially at rest so the initial velocity of t... View the full answer