Newton's second Law
Inertia in Motion
No, a large truck at rest has no momentum. A moving roller skate has momentum.
Yes, a large truck has greater mass than a a roller skate.
Because the floor with more give allows a greater time for the impulse that reduces the momentum of fall to zero. A greater time for a change in momentum results in less force.
Because falling on a floor with more give causes less impact.
Because falling on a floor with more give includes greater momentum.
Because falling on a floor with less give comprises shorter time.
Law of Impulse
Newton's 3rd Law
Law of Momentum
Law of Conservation of Momentum
No, other variables can lead to the change in speed other than acceleration.
Yes, because no acceleration means that no change occurs in velocity or in momentum.
Moves along with the red ball at half "v".
Moves along with the red ball at "v".