n B edagen wileyplus la ienien ane inREA 10e Help l Open Assignment BACK IT Chap

Question

n B edagen wileyplus la ienien ane inREA 10e Help l Open Assignment BACK IT Chapter 07, Problem 01 Is herself backward with a velocity of -2. 05 m/s. Her hands are in A 54.1-kg skater is standing at rest in front of a wall. By pushing against the wall she contact with the wall for 0.782 s. Ignore 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. friction and wind resistance. Find the average force she exerts on the wall (which has the same magnitude, but 07 Problem Number the tolerance is +/-796 Question Attempts: 0 of 3 used SAVE FOR LATER SUBMIT ANSWER

Explanation / Answer

Applying Impulse = change in momentum = F t

m (vf - v0) = F t

54.1 (-2.05 - 0 ) = f (0.782)

F = - 141.8 N

(minus sign because velocity and F are in same direction)

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