please help me for doing these questions of science.
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1.A force acting on an object may cause the object to change shape, to start moving, to stop moving, to accelerate or decelerate
2. buoyant force is the upward force exerted by any fluid upon a body placed in it — compare archimedes' principle.
Friction is the force resisting the relative motion of solid surfaces, fluid layers, and material elements sliding against each other.
3,4,5 i don't know dear,I'm sorry
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