# A ball, of mass 0.1 kg, is dropped from a height of 12 m, What is its momentum when it stikes the ground, in kg m/s?

sciencesolve | Certified Educator

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You need to remember the formula of momentum such that:

`p = m*v`

You should use the kinematic equation that helps you to find the velocity such that:

`v^2 = v_0^2 + 2a*x`

Since the initial velocity is...

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vickyprabhucool | Student

known data:

m=0.1kg,h=12m

unknown data:

momentum=?

formula:

momentum=mass*velocity

velocity(V^2)=Vo^2+2ax

Vo=initial displacement(i.e)=0

a=gravitational force(m/s)=9.81m/s

h (or) x=displacement(m)

momentum=0.1*(2*9.8*12)^1/2

=1.5 kg m/s.

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