Question

A 24-N net force acts on a 8-kg rock.What is the acceleration of the rock?

Answer 1

Answer:

$3 m/s^2$ is the acceleration of the rock.

Explanation:

Force is defined product of mass of an object and acceleration by whihc object is moving.  

Force(F) =$mass(m)\times acceleration (a)$

Given mass of a rock = 8 kg

Acceleration of the rock = a = ?

Net force on the rock = F = 24 N

Putting in the values we get,

$F=m\times a$

$a=\frac{F}{m}=\frac{24 N}{8 kg}=3 m/s^2$

$3 m/s^2$ is the acceleration of the rock.

Answer 2

You need to re-arrange the formula  F = ma which is Force = mass * acceleration.

If F = ma, then to find a you need to divide F by m.  So a = F / m or acceleration = Force / mass.

You then just input your values, so 24 / 8.

24 / 8 = 3.

Hopefully this helps (and it's right aha).