Week 2 Practice Quiz

# Week 2 Practice Quiz - W hat is the unit of weight in the...

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What is the unit of weight in the metric system? A ) kilogram B ) newton C ) pound D ) meters per second squared When you stop at the top after climbing a flight of stairs you have A ) lost energy B ) lost work C ) gained potential energy D ) gained kinetic energy Work, in a scientific sense, is A ) any physical effort that makes you tired B ) the time it takes to perform a task C ) the product of a force and the distance an object moves as a result of the force D ) measured in newtons Which of the following statements correctly states Newton's first law of motion? A ) Every object retains its state of rest or its state of accelerated straight-line motion unless acted upon by an unbalanced force B ) Every object retains its state of rest or its state of uniform straight-line motion unless acted upon by a balanced force C ) Every object retains its state of rest or its state of uniform straight-line motion unless acted upon by an unbalanced force D ) None of the above is correct What is a difference between an object's speed and velocity? A )

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Week 2 Practice Quiz - W hat is the unit of weight in the...

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