Which of the following causes high and low tides on earth?
a.
the moon's gravitational pull on earth causes water to bulge on two sides of the earth.
b.
water swells when tsunamis occur in two areas of earth at the same time.
c.
the earth's rotation is so fast, water will swell and shrink twice a day.
d.
the earth is tilted on an axis, causing water to spread unevenly throughout the planet.

the force on the thing and the distance the force moves the thing

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