Which of the the following are examples of projectile motion of both projectile motion and two dimensional motion

The period of a pendulum varies directly as the square root of the length of the pendulum and inversely as the square root of the acceleration due to gravity. find the period when the length is 144 cm and the acceleration due to gravity is 980 cm per second squared, if the period is 7pi seconds when the length is 289 cm and the acceleration due to gravity is 980 cm per second squared.

The velocity of sound wave in air at 35°c is 353m/s, calculate the velocity of sound at 46°c

Which factor listed below most likely results in the loss of genetic variation from small populations? question 2 options: mutation migration genetic recombination genetic drift