Answer:
The answer is
Explanation:
The mass of an object given it's momentum and velocity / speed can be found by using the formula
[tex]m = \frac{p}{v} \\ [/tex]
where
m is the mass
p is the momentum
v is the speed or velocity
From the question
p = 280 kg/ms
v = 10 m/s
The mass of the object is
[tex]m = \frac{280}{10} = 28 \\ [/tex]
We have the final answer as
Hope this helps you