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Which of the following is a scientific statement?

At one instant a heavy object in air is moving upward at 50 m/s. One second later its speed is approximately

Aristotle would say that a hockey puck sliding across the ice finally comes to rest because

If the net force acting on an object equals zero, can the object possibly be in motion?

When a ball thrown straight upwards reaches the very top of its path, the magnitude of its acceleration is

The earliest and most influential Greek philosopher was Aristotle, who among many contributions taught that

Negative charged particles found located in energy level outside the nucleus of an atom:  

Determine which of the following ordered pairs is a solution to the given system of equations.

Elements on the left side of the periodic tend to ______________ electrons to form positive ions in nature. a. Share                   b.   gain                  c. lose                 d. delete

Which one of the following elements is NOT one of the four most abundant elements found in living organisms? a. Ca          b. O           c. N          d. H