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.
It shows how fast an object is moved. Instantaneous speed is the motion rate of object at a particular time period or moment. If we take an example of a cheetah who is running with speed of 80 miles per hour then it is his instantaneous speed because it is shown as in per hour speed.
Examples of Frequency. Although the standard definition of frequency is based on events per second, other units of time may be used, such as minutes or hours. For example, a human heart may beat at a frequency of 68 beats per minute. A 78 record on a turntable turns at the rate of 78 revolutions per minute or 78 rpm.