Question

How much force is required to move an object of mass 5kg if it start with rest and get a velocity of 6m/s in 2 second?

Answer 1

F = ma
F = 5× 6/2
F = 15 N

Answer 2

Hey there !

Thanks for the question !

Solution:

Formula to be used:

• Force = Mass × Acceleration

• Acceleration = Change in Velocity / Time

• Change in velocity = Final Velocity ( V ) - Initial Velocity ( u )

Application :

Given Information :

Initial Velocity ( u ) = 0 m/s ( Since the object starts from rest )

Final Velocity ( v ) = 6 m/s

Time taken = 2 seconds

So Acceleration = v - u / t

=> Acceleration = 6 - 0 / 2

=> Acceleration = 6 / 2 = 3 m/s²

Hence the acceleration of the body is 3 m/s²

Mass is 5 kg, as it is already given in the question.

Hence Force = Mass × Acceleration

=> Force = 5 × 3

=> Force = 15 Kg.m/s² or 15 N

Therefore the force required to move the body of mass 5 kg with a velocity of 6 m/s in 2 seconds is 15 N.

Hope my answer helped !