[单选题]
An egg hits a wall cov
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;zzf;x*zwb2 l5n -ijmwngp:.variation of horizontal force $F$ acting on the egg with time $t$ during the collision.
The soft material on the wall is removed and an identical egg with the same initial speed collides with and sticks to the wall. Which graph shows the variation of horizontal force $F$ acting on the second egg with time $t$ during the collision? The graph for the first egg is shown as a dotted line.
