Which has more momentum, an object with a mass of #9kg# moving at #8m/s# or an object with a mass of #6kg# moving at #14m/s#?

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Answer 1 · 2018-06-07T00:25:44

The second object of course...

Momentum #(p)# is given by the equation:

#p=mv#

where:

#m# is the mass of the object

#v# is the velocity of the object

So, we get:

#p_1=m_1v_1#

#=9 \ "kg"*8 \ "m/s"#

#=72 \ "kg m/s"#

Meanwhile,

#p_2=m_2v_2#

#=6 \ "kg"*14 \ "m/s"#

#=84 \ "kg m/s"#

From here, we see that #p_2>p_1#, and so the second object has more momentum than the first one.