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

Record timer Thing such as the left figure is called a record timer. How to use record timer A record timer is an appliance beating against the point in record tape every interval for period of time.The time distance is different by an appliance and an area.60 dots batted in for one second is used in West Japan, and it is used 50 dots batted in in the East Japan.One-60th of a second is needed between each dots in West Japan.The distance of the dots is the distance that moved for one-60th of a second.   Exercise to go up exercise / the slope going down the slope The speed becomes gradually fast so that downward power along the slope continues working as for the exercise to fall at a slope when I watch an upper movie. As for the exercise to go up the slope for it, the speed along the slope becomes gradually slow. Downward power grows big so that the degree of leaning of the slope is big as for the exercise to fall from this at a slope, and the increase of speed grows big. The exercise of the frictional force At first a mask can fall in an object, and the frictional force is going to disturb the exercise of the object. Because I work to reverse by this with the direction of the exercise, the speed becomes slow.