An object thrown vertically upwards reaches a hight of 500 m What was it's initial velocity How long - Science -

Question

An object thrown vertically upwards reaches a hight of 500 m What
was it's initial velocity? How long will the object take to the
earth? Assume g= 10m/s square

Teja Teppala · Accepted Answer

Dear student
Height reached h=500 mFinal velocity v=0 m/sInitial velocity u=?g=10 m/s2Now, v2-u2=-2gh⇒02-u2=-2×10×500⇒-u2=-10000⇒u=10000=100 m/sNow, v=u-gt⇒t=v-u-g=0-100-10=10 sTherefore total time taken=10×2=20 s
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An object thrown vertically upwards reaches a hight of 500 m. What was it's initial velocity? How long will the object take to the earth? Assume g= 10m/s square