Without shoes, landing on the heel is painful and can translate into a collision force some 1.5 to 3 times body weight.

不穿鞋跑步，如果用脚后跟着地的话是非常疼的，因为在着地时的冲击力大概有自己体重的1.5到3倍之大。

youdao

The net effect will be to jerk the easy-money football away from Airline Charlie and produce a painful collision between his backside and the hard ground of economic reality.

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McCullum, who overcame a painful collision with Johan Botha when he slid into the crease and injured his neck, hit two sixes, top-edging over fine-leg and flat-batting over long-on.

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