identifying differences in momentum\nif a motorcycle, a car, and a big rig are all moving with a velocity of…

Explanation:

Step1: Recall momentum formula

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

Step2: Analyze velocities

All three - motorcycle, car and big - rig have the same velocity $v = 100$ km/h.

Step3: Compare masses

The mass of a big - rig is greater than the mass of a car, and the mass of a car is greater than the mass of a motorcycle, i.e., $m_{big - rig}>m_{car}>m_{motorcycle}$.

Step4: Determine momentum

Since $p = mv$ and $v$ is constant, the object with the largest mass will have the largest momentum. So the big - rig has the greatest momentum.

Answer:

The big rig