In the recent Marvel Avengers movie, Captain America gave a helping toss to Black Widow so she could catch one of the chariots flying by of Loki's army.

The chariot was flying by at least 80 miles per hour and Captain America threw Black Widow straight up to catch it as it was flying by at a parallel angle to the ground.

Black Widow simply grabbed on to the chariot and kept going without ripping her arm off or doing any damage to her at all.

Does Black Widow have some special enhancement physically to withstand this type of force?