Merge pull request #4598 from boyu0/iss2771_physical

issue #2771: fix warning log and fix typo.

Author: James Chen

cocos/physics/CCPhysicsBody.cpp

@@ -555,7 +555,7 @@ void PhysicsBody::setVelocity(const Point& velocity)
 {
     if (!_dynamic)
     {
-        CCLOG("physics warning: your cann't set velocity for a static body.");
+        CCLOG("physics warning: your can't set velocity for a static body.");
         return;
     }
 
@@ -581,7 +581,7 @@ void PhysicsBody::setAngularVelocity(float velocity)
 {
     if (!_dynamic)
     {
-        CCLOG("physics warning: your cann't set angular velocity for a static body.");
+        CCLOG("physics warning: your can't set angular velocity for a static body.");
         return;
     }
 

samples/Cpp/TestCpp/Classes/PhysicsTest/PhysicsTest.cpp

@@ -396,7 +396,6 @@ void PhysicsDemo::onTouchMoved(Touch* touch, Event* event)
 
     if (it != _mouses.end())
     {
-        it->second->getPhysicsBody()->setVelocity((touch->getLocation() - it->second->getPosition()) * 60.0f);
         it->second->setPosition(touch->getLocation());
     }
 }