Aplayer hits a base ball at such an angle. the ball goeshigh
up in the air and the player runs and catches the ball beforeit
hits the ground. which of the two has greaterdisplacement.
.

the current is 0.6

voltage ÷ resistance = current

so 12 ÷ 20 = 0.6

it's when something is going so fast it makes a loud noise, breaking the sound barrier, for example: a jet makes a loud noise, not only cause of the jet but because they reached a point where they went so fast that you can year the noise from various parts, kinda like a police car, lets say the car was going   so fast that you hear the siren of the cop car right next to you, but the car is probably a mile a way, it's cos the siren was next to you a few seconds if you understand me

the maxium height is 34m/s