Friction - Force that always retards motion, Force - Push or pull, Gravity - The attractive force applied by earth, Pressure - Force acting per unit area, pascal - SI unit of pressure,

द्वारा

लीडरबोर्ड

दृश्य शैली

विकल्प

टेम्पलेट स्विच करें

ऑटो-सेव पुनःस्थापित करें: ?