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What are some situations where friction is good and some some where friction is bad?
In situations where you want to create heat or dissipate kinetic energy, friction is usually a good thing. Friction when rubbing your hands together creates heat, which you appreciate, and friction between your brake pad and brake disc slows down your car, which is also a good thing. In situations where you want to maintain kinetic energy or minimize heat, friction is usually bad. Air friction slows down a glider, limiting its range, and mechanical friction in a car rolling on a flat surface causes it to stop without the brakes being applied.
How does friction affect stopping distance?
Some of the kinetic energy of a body in motion is used up in overcoming friction, which acts in the direction opposite to that of the motion. The reduction in energy means that the stopping force needs less time to do its work.
When do adolescents apply formal logic?
in all situations. in very few situations. only when encouraged to do so. in some situations but not in others.
How do you calculate linear speed?
Linear speed = change in linear displacement (from some fixed point)/time for that change. [Although this works in all everyday situations, the Theory of Relativity shows that there is no fixed frame of reference and so no fixed point.]
Give some important of studying mathematics in everyday life?
Give some important of studying mathematics in everyday life?
