When a force is applied to a body with a mass of 100 kg,the acceleration of the body is 1 m/s/s.If the same force is applied to a body with a mass of 40 kg,what is the acceleration of the body?
A)0.25 m/s/s
B)1 m/s/s
C)10 m/s/s
D)2.5 m/s/s

Question

Quizplus · Accepted Answer

According to Newton's second law of motion, $F = ma$, where $F$ is the force applied, $m$ is the mass of the object, and $a$ is the acceleration. If the same force is applied to a lighter object, the acceleration increases. For the 100 kg mass, $a = 1 m/s^2$. For the 40 kg mass, using the proportion $100 kg : 1 m/s^2 = 40 kg : x m/s^2$, solving for $x$ gives $x = 2.5 m/s^2$.

When a Force Is Applied to a Body with a Mass