IDNStudy.com, kung saan ang iyong mga tanong ay may mabilis na sagot. Makakuha ng hakbang-hakbang na mga gabay para sa lahat ng iyong teknikal na tanong mula sa mga miyembro ng aming komunidad na may kaalaman.

A cat steps off a ladder and fell to ground in 2 secconds.

a. How high is the ladder?
b. How fast does it fall?
c.What will be the average speed of fall?

Sagot :

x = distance, t = time, v= initial velocity, a = acceleration; Assuming the cat is at rest before the fall; A. x = vt - (1/2)at^2; x = (0 m/s)(2 s) - (1/2)(9.8 m/s^2)(2 s)^2; x = - 19.6 m (ignore the negative sign. It just means that the cat fell downwards); B. V = Initial Velocity + at; V = (0 m/s) + (-9.8 m/s^2)(2 s); V = -19.6 m/s; C. Ave. Speed = (V - Initial Velocity); Ave. Speed = 19.6 m/s - 0 m/s; Ave. Speed = 19.6 m/s