How much force would it take if you push a 1000 kg car with the acceleration of 0.5 m/s/s?

5× 1/2 = ? a) more than 5 because you are multiplying by a whole number b) 5/10 because you multiply the numerator and denominator by 5 c) less than 5 because you are multiplying by a number that is more than 1 d) less than 5 because you are multiplying by a number that is less than 1

Extra points! find the missing dimension! need asap

Which geometric principle is used to justify the construction below?