8 photos: Actors who have played Batman. Christian Bale â After the disaster of Batman & Robin, the franchise was destined to remain a joke until director Christopher Nolan came along to reinvent the role and finally make the Dark Knight, well, dark. photos: Actors who have played Batman. Christian Bale â After the disaster of Batman & Robin, the franchise was destined to remain a joke until director Christopher Nolan came along to reinvent the role and finally make the Dark Knight, well, dark.
Full Answer. The instantaneous speed of an object should not be confused with the average speed. For example, a person who drives 60 miles in a single hour has an average speed of 60 miles per hour, but the instantaneous speed of the vehicle could vary greatly from one instant to another.
The speed of an object is a scalar (e.g. 180 km/h), while its velocity is not (i.e. 180 km/h north). Other examples of scalar quantities in Newtonian mechanics include electric charge and charge density. An example of a pseudoscalar is the scalar triple product (see vector), and thus the signed volume.or example, the charge density at a point in a medium, which is a scalar in classical physics, must be combined with the local current density (a 3-vector) to comprise a relativistic 4-vector.