Final answer:
By rearranging the momentum formula, the mass of the pingpong ball thrown at 8 m/s with a momentum of 2 kg/s is calculated to be 0.25 kg.
Step-by-step explanation:
Calculating the Mass of a Pingpong Ball Based on Momentum
To find the mass of the pingpong ball, we use the formula for momentum, which is momentum (p) = mass (m) × velocity (v). Given that the momentum of the ball is 2 kg/s when thrown at 8 m/s, we can rearrange the equation to solve for mass: m = p / v. So the mass of the pingpong ball is m = 2 kg·s / 8 m/s, which simplifies to 0.25 kg.