Question

Which has more momentum, a `7kg` object moving at `8m/s` or a `4kg` object moving at `9m/s`?

Answer 1

The object having a 7kg mass moving with 8m/s velocity has more momentum.

Explanation:

Linear momentum is defined as the product of the mass and velocity of the object.
`p=mv`.

Consider the object which has a mass 7kg and velocity 8m/s with linear momentum '`p_1`' and the other one with 4kg and 9m/s as '`p_2`'.

Now calculate the '`p_1`' and '`p_2`' with above equation and given numericals we get,
`p_1=m_1v_1=(7kg)(8m//s)=56kgm//s` and
`p_2=m_2v_2=(4kg)(9m//s)=36kgm//s`.
`:. p_1 >p_2`