It takes a force of 3000 N to accelerate an empty 1000 kg car at 3 m/s2. If a 160 kg wrestler is inside the car, how much force will be needed to produce the same
acceleration? *

the force needed to produce the same acceleration is 480kg

explanation:

let the different atoms be x and y. each with four protons and same mass will be represented as follows.

mass number is number of protons + number of neutrons.

            and  

since, it is given that one has a negative charge while the other is neutral. therefore, there will be increase in number of protons and the atom will be represented as follows.

according to periodic table, mass number of beryllium is 9 and it has atomic number 4 so, the atoms will be and .  

the protons and neutrons will be located inside the nucleus whereas the electrons will be revolving around the nucleus.