explain the question 10and 12 i will mark u as brainlist .
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see these are quiet esy but u have to apply ur knowledge
Explanation:
10. Here the mass if iron is more than mass of rubber right!. so inertia acts here which is measured by objects mass/weight. as the brakes are applied both will roll. it rolls in the opposite direction of brakes applied. No they wont move in same speed. because rubber which is frictioned more will travel slow where as iron moves fast
12 because to overcome the opposite reactional force exerted by cart system and ground
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