What force is required to accelerate a car at a rate of 4 m/s2 if the car has a mass of 37.5 kg?

Ionic compounds are made of ions, and yet the overall charge of an ionic compound is neutral. why?

What are the charges of the subatomic particles by choosing the answer from the drop down menu. protons have a (+1,0,or-1). (protons,neutrons,electrons) have a 0 charge. 3.) electrons have a (+1,0,-1)

Which of the following is an indication that a substance has undergone a chemical change? a. no new product has been formed. b. the color of the substance has not changed. c. the original constitute has not changed. d. the molecular structure has changed.