Learning Power to an object Gravity Frictional force Vertical drag Pressure The movement of the object The movement of the speed to change The movement and power Game Blanks game Falling ball game Panel Question Tug of war game Shuffle game Look for a tag Quiz Quiz 1 Quiz 2 Site map Site map

Stroboscopic photography The left figure uses a stroboscope, and it is a photograph it exposes an object to light every uniformity time, and to photograph. This is called stroboscopic photography.   The stroboscopic photography of a falling blackball When the left figure records the exercise of the object at short distance and examines it, only the speed changes.   Stroboscopic photography of this feint exercise The left figure changes into both the speed of the object and the direction.