Question

a force of 2 newton acting on a certain mass for 6 seconds gives it a velocity of 6m/s. the mass is equal s

Answer 1

Force=2newton
time=6 sec.
velocity=6m/s
we know that,
Force=mass×acceleration
=mass×velocity/time
mass=force×time/velocity
=2×6/6
mass=2kg

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Answer 2

Given :

Force (F) = 2 N

Time (T) = 6 seconds

Velocity = 6 m/sec

To Find :

Mass of the body

Solution :

Acceleration of the body (a) = $\frac{Final Velocity (v) - Initial Velocity (u)}{Time (T)}$

As the body starts from rest, initial velocity (u) = 0

So,   a  =  $\frac{v - u}{T}$

⇒     a  =  $\frac{6 - 0}{6}$

∴      a  =  1 m/sec²

We know,

    Force acting on the body (F)    = $\frac{Mass (M)}{Acceleration (a)}$

⇒                                           2          =  $\frac{Mass (M)}{1}$

∴                                       Mass (M)  =  2 Kg

Therefore, the mass of the given body is 2 Kg.