3. Compare the momentum of a 75kg footballer running at a speed of 8m/s to that of a hard kicked 0.5 kg soccer ball at a speed of 30m/s. Which one has a greater momentum?
To calculate the momentum of an object, we use the formula:
Momentum = mass x velocity
For the footballer:
Mass = 75 kg
Velocity = 8 m/s
Momentum of the footballer = 75 kg x 8 m/s = 600 kg*m/s
For the soccer ball:
Mass = 0.5 kg
Velocity = 30 m/s
Momentum of the soccer ball = 0.5 kg x 30 m/s = 15 kg*m/s
Comparing the two, we can see that the footballer has a greater momentum with 600 kg*m/s compared to the soccer ball with 15 kg*m/s.