Question

which has more momentum? they have the same amount of momentum a moving car a parked semi truck

Explanation:

Step1: Recall momentum formula

Momentum \(p = mv\), where \(m\) is mass and \(v\) is velocity.

Step2: Analyze parked semi - truck

A parked semi - truck has \(v = 0\). So, \(p_{truck}=m_{truck}\times0 = 0\).

Step3: Analyze moving car

A moving car has non - zero velocity \(v_{car}>0\) and non - zero mass \(m_{car}>0\). So, \(p_{car}=m_{car}v_{car}>0\).

Answer:

B. A moving car