A 0.55 kg projectile is fired into the air from the top of a 11.9 m cliff above a valley. Its initial velocity is 9.72 m/s at 38◦ above the horizontal. The acceleration due to gravity is 9.8 m/s 2 . Answer in units of s. How long is the projectile in the air? How far from the bottom of the cliff does the projectile land? Answer in units of m.

at positions a, g kinetic energy is maximum.

at position d, potential energy is maximum.

wire in brush may conduct electricity from cell to drill and vice versa electrc shock possible

option number c is the right answer.

no. bullets are macro objects. wave nature is for light waves, extremely tiny particles. if a light particle was the size of your finger, the bullet would be the size of the universe. so basically, that huge difference in size makes the wave nature of matter insignificant.