Answer to Question #112031 in Mechanics | Relativity for marls

Question

A force of 10 N gives an object an acceleration of 6 m/s2. What force will give the same object an acceleration of 18 m/s2.

Answer 1

The Newton's second law states

$$ma=F$$

Hence,

$$F_2=F_1\frac{a_2}{a_1}=(10\rm \:N)\times\frac{18\:\rm m/s^2}{6\:\rm m/s^2}=30\:\rm N.$$