That's a rather vague request. I'll make an assumption, and go by the final hit Luffy made at the end of the clip. Due to him having to smash through the rock, and how he sent his opponent a few hundred metres into the air afterwards, I'd say it's about a 50 to 75 ton feat of strength. The speed is pretty hard to pin down.
His punches also caused Earthquakes and th final punch upturned a couple of buildings that where on the ground.