What is the difference between an isotope and an ion? ! : )

What will a positive and a negative charge do if they are separated from each other?

In positive numbers less than 1, the zeros between the decimal point and a non-zero number are blank significant

Asailboat is traveling to the right when a gust of wind causes the boat to accelerate leftward at 2.5m/s2 for 4s. after the wind stops, the sailboat is traveling to the left with a velocity of 3.0m/s.assuming the acceleration from the wind is constant, what was the initial velocity of the sailboat before the gust of wind? answer using a coordinate system where rightward is positive.