In Physical Science Example 9.6 the equation time changes from 1.2 seconds to 1.44 seconds without explanation. Why was this done?

The time was not changed. We evaluated the equation. The equation is:

distance = (1/2) x (9.8 m/sec2)x(1.2 sec)2

The exponent of "2" at the end of the equation means you must square 1.2 seconds. When you square 1.2 (which means taking 1.2 times itself), you get 1.44. When you square "seconds," you get seconds squared. Thus, the equation becomes:

distance = (1/2) x (9.8 m/sec2)x(1.44 sec2)

Tags: Physical Science
Last update:
2017-11-20 18:59
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