Understanding Momentum

Momentum is a measure of an object's mass in motion. It's calculated by the following formula:

* Momentum (p) = mass (m) * velocity (v)

Calculations

1. Convert mass to kilograms: 250 g = 0.25 kg

2. Use the given velocity: v = 40 m/s

3. Apply the momentum formula:

* p = (0.25 kg) * (40 m/s) = 10 kg m/s

Answer: The momentum of the ball is 10 kg m/s.