Question

A 10 N net force is applied to an object, which then accelerates at 4 m/s^2. What is the mass of the object? Which of Newton's Laws would you use to solve this problem?

a) Mass = 2.5 kg; Newton's First Law
b) Mass = 40 kg; Newton's Second Law
c) Mass = 2.5 kg; Newton's Third Law
d) Mass = 40 kg; Newton's Law of Gravitation

Answer 1

To find the mass of the object, use Newton's Second Law of Motion: force = mass x acceleration. The mass of the object is 2.5 kg and the appropriate Newton's Law is the First Law.

Step-by-step explanation:

To find the mass of the object, we can use Newton's Second Law of Motion, which states that force is equal to mass multiplied by acceleration (F = ma). In this case, the force acting on the object is 10 N and the acceleration is 4 m/s^2. Rearranging the equation, we have mass = force/acceleration. Therefore, the mass of the object is 10 N / 4 m/s^2 = 2.5 kg.

The correct option is a) Mass = 2.5 kg; Newton's First Law.