What's the momentum of a 3.5-kg boulder rolling downhill at 5 m/s?

9.   What's the momentum of a 3.5-kg boulder rolling downhill at 5 m/s? 

   

To find the momentum of an object, you can use the formula:

Momentum = mass × velocity

In this case, the mass of the boulder is given as 3.5 kg, and the velocity is given as 5 m/s.

So, to find the momentum, simply multiply the mass by the velocity:

Momentum = 3.5 kg × 5 m/s

Now calculate the product:

Momentum = 17.5 kg·m/s

Therefore, the momentum of the 3.5-kg boulder rolling downhill at 5 m/s is 17.5 kg·m/s.