Question

URGENT: find the mass of a wrecking ball moving at 6 m/s and has a momentum of 3600 kg × m/s

Answer 1

`600\; {\rm kg}`.

Step-by-step explanation:

When an object of mass
`m` moves at a velocity of
`v`, the momentum
`p` of that object will be
`p = m\, v`.

In this question, both momentum
`p` and velocity
`v` are given, whereas mass
`m` needs to be found. Rearrange the equation
`p = m\, v` to find an expression for mass
`m\!`:

`\begin{aligned} m &= (p)/(v) \\ &= \frac{3600\; {\rm kg \cdot m \cdot s^(-1)} }{6\; {\rm m\cdot s^(-1)}} \\ &= 600\; {\rm kg} \end{aligned}`.

In other words, the mass of this object is
`600\; {\rm kg}`.