Zoro goes in for a serious attack. He shouts so he is psyching himself up. Tashigi blocks him casually, with the context that Tashigi doesn't want to fight, while Zoro is pressed and needs to push on. Zoro would've gone for a named attack. Tashigi stops his full-forced assault 
	
	
		
		
	
	
		
			
		
		 
	
And Zoro can't do this, stopping the momentum of a cannon ball with a straight arm mid air, which amounts to her using onyl her hand strength to stop the cannon balls momentum
		
			
		
		 
	
		
		
	 
	And Zoro can't do this, stopping the momentum of a cannon ball with a straight arm mid air, which amounts to her using onyl her hand strength to stop the cannon balls momentum
 
	
As for stopping the cannon ball it's more of a skill than strength feat, I don't see why Zoro can't do it. We've literally seen him lifting tonnes of weights before.
 
				 
 
		 
 
		
 
 
		 
 
		 the Salt
the Salt 
 
		 
 
		 
 
		 
 
		
 
	
 
 
		 
 
		 
 
		 
 
		