Why does it hurt less to land on a soft foam pad than on bare concrete after completing a high jump?

$dp=F^{**}dt.dp$ is the same whether you hit concrete or foam $($you want to come to rest from same initial velocity$).$ On foam, you have a larger dt and thus a larger F $.$

$dp=F**dt.dp$ is the same whether you hit concrete or foam $($you want to come to rest from same initial velocity$).$ On foam, you have a smaller dt and thus a smaller F$.$

$dp=F^{**}dt.$ dp is the same whether you hit concrete or foam $($you want to come to rest from same initial velocity$).$ On foam, you have a larger dt and thus a smaller $F.$

$($P$)dp=F^{**}dt.dp$ is the same whether you hit concrete or foam $($you want to come to rest from same initial velocity$).$ On foam, you have a smaller dt and thus a larger F$.$