Two rocks are thrown horizontally at the same time and from the same height. if the initial speeds of rocks a and b are 10 m/s and 15 m/s, respectively, which statement below is true? you can ignore air friction a) rock a will hit the ground before rock b. b) rock b will hit the ground before rock a. c) rock a and rock b will hit the ground at the same time. d) the answer will depend on the masses of rock a and rock b

The horizontal speed has no effect on how long it flies before it hits the ground ... only how far it goes horizontally before it hits the ground.

Rock A and rock B will hit the ground at the same time. (C)  BUT ... Rock-B had more horizontal speed, so it'll go farther before it hits the ground.

Weirdly ... that means that if you aim a gun horizontally, and drop a bullet from the muzzle at exactly the same time as you shoot the gun, both bullets will hit the ground at the same time.  

this is an example of "committed" time.

committed time, as contracted time, takes need over essential and available time since it is seen as profitable work. it alludes to the time allotted to keep up a home and family. at the point when a man is commuting using committed time this individual may feel that the drive is an obligation to family, for example, strolling youngsters to class or driving a mate to work. contracted and committed time clients may feel that their commute could really compare to the commute of important or leisure time clients on the grounds that their commute is profitable work. in this manner, they might be more disposed to pick a mechanized method of movement.