#### Solution By Steps
***Step 1: Calculate Initial Kinetic Energy***
Kinetic Energy (KE) = \(0.5 imes m imes v^2\), where \(m\) is mass and \(v\) is velocity. Initially, \(m = 2110 \, ext{kg}\), \(v = 40 \, ext{km/h} = 11.11 \, ext{m/s}\) (since \(1 \, ext{km/h} = 0.2778 \, ext{m/s}\)). So, \(KE_{ ext{initial}} = 0.5 imes 2110 imes 11.11^2\).
***Step 2: Calculate Final Kinetic Energy***
Final velocity \(v = 54 \, ext{km/h} = 15 \, ext{m/s}\). So, \(KE_{ ext{final}} = 0.5 imes 2110 imes 15^2\).
***Step 3: Calculate Change in Kinetic Energy***
Change in KE = \(KE_{ ext{final}} - KE_{ ext{initial}}\).
***Step 4: Calculate Magnitude of Momentum***
Momentum (p) = \(m imes v\). Using final velocity for magnitude, \(p = 2110 imes 15\).
#### Final Answer
Change in Kinetic Energy = \(KE_{ ext{final}} - KE_{ ext{initial}} = 237,975 - 130,641.05 = 107,333.95 \, ext{J}\).
Magnitude of Momentum = \(p = 31,650 \, ext{kg m/s}\).
#### Key Concept
Kinetic Energy, Momentum
#### Key Concept Explanation
Kinetic Energy represents the energy an object possesses due to its motion, calculated as \(0.5 imes m imes v^2\). Momentum is the product of an object's mass and its velocity, indicating the quantity of motion it has. Both concepts are fundamental in understanding the dynamics of moving objects.