Question

A rocket with the mass of 28,000 kg and has a momentum of 2.1x107 kg*m/s. What is the velocity of the rocket? m/s (Round to 2 significant figures

Answer 1

In order to calculate the rocket velocity, we can use the momentum formula below:

`p=mv`

Where m is the mass and v is the velocity.

So, for p = 21 * 10^7 kg*m/s and m = 28,000 kg, we have:

`\begin{gathered} p=mv \\ v=(p)/(m) \\ v=(2.1\cdot10^7)/(28000) \\ v=750\text{ m/s} \end{gathered}`

Therefore the rocket velocity is 750 m/s.

(answer already in 2 significant figures)