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OpenStudy (anonymous):
2. An object is launched straight up. The object attains a height of 107 m after 2.50 s. When (i.e. how long after launch) will the object have a speed of 20 m/s on the way back down?
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OpenStudy (anonymous):
well that's physics
OpenStudy (anonymous):
2 s
OpenStudy (anonymous):
could u explain to me how u got the answer.please
OpenStudy (anonymous):
please
OpenStudy (anonymous):
have u seen this formula in physics v= u +at
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OpenStudy (anonymous):
uhh not exactly
OpenStudy (anonymous):
is taht ther formula u used
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