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Feb21-12, 07:52 PM
velocity increases due to acceleration... a = change in velocity/change in time
Good. Now apply that to the vertical motion.
so we have a change from zero to 66.4 over the course of 9 seconds
meaning acceleration is 7.4 m/s ?
No, the horizontal motion is not accelerated.
and i know v = vi + at
That's the equation you need. Apply it to the vertical motion.