تسجيل الدخول

تسجيل

Initial Velocity

المؤلف:  GEORGE A. HOADLEY

المصدر:  ESSENTIALS OF PHYSICS

الجزء والصفحة:  P-44

2025-10-23

622

 If a body is thrown vertically downward, its velocity and the space passed over in any time will differ from those of a falling body that starts from a condition of rest. If we let V represent the velocity per second of such a body at the beginning, we may write

Velocity per second at the end of 1 sec. = V + g,

Velocity per second at the end of 2 sec. = V + 2 g,

Velocity per second at the end of 3 sec. = V + 3 g,

Velocity per second at the end of t sec. =V+ t g,

Or     v= V + g t,

 a formula that differs from Formula 7 only in supposing an initial velocity. An initial velocity makes corresponding changes in Formulas 8 and 9 also, and they become