Question

How do I find the magnitude of the net force acting on the box

Answer 1

Answer:

20 N

Explanation:

Newton's second Law of motion law states that If there is a external force acting on an object. Then the rate of change of momentum of  that object is directly proportional to the force acting on its.

• the net force acting upon the object  (F)
• the mass of the object. (m)
• V Final velocity of the object
• U initial velocity of the object
• mV -Final momentum of the object
• mU - Initial momentum of the object

Due to momentum change of that object, momentum change. We can write the equation bellow this,

F = (mV-mU)/t

When m is constant we can write the above expression like this,

F = m (V-U)/t

There for

(V-U)/t  =  a ( Rate of change of velocity can be denoted as acceleration )

F = m× a

we can state this in mathematically,

a = F/m

in another representation

F = m*a

Net Force = mass*acceleration

                 = 10 * 2

                 = 20 N

object is subjected to a negative acceleration due to the friction.