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physic =)

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A bullet is fired directly upward from a rifle at ground level. Assuming a velocity muzzle of 490 m/s, and neglecting air resistance, find:

A.height of the highest point reached.
B.time required to reach this point.
C.total time before the bullet returns to the ground.
D.speed of the bullet upon hitting the ground.

  • physic =) - ,

    please..somedaY answer this -_-

  • physic =) - ,

    mv²/2=mgh
    h= v²/2g=....
    v(fin)=v-gt
    v(fin)=0
    t=v/g=.....
    t(total) =2t
    v(ground)=v=490 m/s

  • physic =) - ,

    ..

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