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1. Momentum = 0.2kg * 8 ms^-1 = 1.6 kgms^-1Inelastic collision: a piece of plasticine of mass 0.20 kg falls to the ground and hits the ground with a velocity of 8.0 ms-1 vertically downward. It does not bounce but sticks to the ground.
1- Calculate the momentum of the plasticine just before it hits the ground.
2-State the transfers of momentum and of kinetic energy of the plasticine which occur as a result of the collision.
...WHATS THE ANS OF PART 2 ..........HELP PLZ.....WID FULL EXPLANATION!!!!
2. Momentum is never gained or lost. Such illusions may be created in a case like this, where a ball with momentum suddenly loses it all. However, as the ball gains momentum as it comes closer to the earth (because it accelerates) the earth is also gaining momentum in the opposite direction towards the ball. We don't notice this because this is a very small amount due to massive size of earth (my book said half diameter of an atom or something).
Similarly, energy is neither created nor destroyed. However, kinetic energy is not always conserved, since it may be converted to other forms. In inelastic collisions like this, kinetic energy was converted to heat energy.