v^2-v0^2=2as → 2.0^2 m/s - 0 m/s=2a . 2.0 m → a=1 m/s^2
F=m.a → 4.0 N = m . 1.0 m/s^2 → m=4.0 kg
I have corrected it now.
a = -1ms-^2
Force = massaccelaration
Since, force is resistive it will be negative
you took initial velocity as 0 whereas final velocity should be zero
the expression is v^2 -u^2 =2as
where v is final velocity and u is initial velocity
Thank you so much .
No difference which one is initial and which is final. You end op with a positive number for the mass as we use the absolute values for all parameters.
Have you got two different values for acceleration?!
One in newtons and one in m/s^2?!
And what about the mass which is the question
Oh sorry I didn’t notice, it was a typo I corrected it