Question

exit ticket - momentum

1. what two factors determine the momentum of an object?

1. if two balls have the same mass but different velocities, which one has more

momentum? why?

1. a soccer ball has a mass of 0.4 kg and moves at 10 m/s. what is the momentum

of the ball? show your work:

Explanation:

Question 1

Momentum in physics is defined by the formula \( p = mv \), where \( p \) is momentum, \( m \) is mass, and \( v \) is velocity. So the two factors are mass and velocity.

Using the momentum formula \( p = mv \), if mass (\( m \)) is the same, momentum (\( p \)) is directly proportional to velocity (\( v \)). So the ball with the higher velocity will have more momentum because a larger \( v \) (with constant \( m \)) leads to a larger \( p \).

Step1: Recall the momentum formula

The formula for momentum is \( p = mv \), where \( m \) is mass and \( v \) is velocity.

Step2: Substitute the given values

We know \( m = 0.4 \, \text{kg} \) and \( v = 10 \, \text{m/s} \). Substituting these into the formula: \( p = 0.4 \times 10 \).

Step3: Calculate the result

\( 0.4\times10 = 4 \). The unit of momentum is kilogram - meter per second (\( \text{kg·m/s} \)).

Answer:

The two factors that determine the momentum of an object are mass and velocity.

Question 2