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If a car and a truck are traveling at the same speed, the truck would have more momentum because it has a greater mass.
Momentum is mass times velocity, if the velocity of the two are the same, the object with the greater mass will have proportionally greater momentum.
That would depend on their velocity (speed with direction), since the formula for momentum is momentum=Mass*Velocity. If they are moving at the same Velocity, the heavier of the two would have greater momentum.
Since momentum equals mass times velocity, if the mass of the truck times its velocity is greater than the mass of the bus times the bus' velocity then the momentum of the truck will be greater than the momentum of the bus.
By traveling at the same speed. Kinetic energy is a completely different story, however.
Clearly the truck, as it is heavier
No.
The truck has the most mass, but because it is at rest, the skateboard has the most momentum.
Magnitude of momentum = (mass) x (speed) = (4,500) x (25) = 112,500 kilogram-meters/second
No.
No
Momentum = Ρ = m•v, m is mass in kg, and v is velocity in m/s. Both the semi and the linebacker are traveling at the same velocity. However, the mass of the semi is hundreds of times the mass of the linebacker. Therefore, the semi will have a much greater momentum than the linebacker.